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Sample Paper 6 Solutions
Sample Paper 5 Solutions
Class- X Exam - 2023-24
Mathematics - Standard
‘Time Allowed: 3 Hours
General Instructions :
1, This Question Paper has 5 Sections A-E,
2, Section A has 20 MCQs carrying 1 mark each,
3. Section B has 5 questions carrying 02 marks each,
Section C has 6 questions carrying 03 marks each,
Section D hus 4 questions carrying 05 marks each,
Scotion E has 3 case based integrated
‘and 2 marks each respectively.
 
 
Maximum Marks : 80
of aswessmont (04 marks exch) with sub-parts of the values of 1, 1
7. All Questions are compulsory. However, an intemal choice in 2 Qs of 5 marks, 2 Qs of 3 marks and 2 Questions
of 2 marks has been provided, An internal choice has been provided in the 2 marks questions of Section E.
8, Draw neat figures wherever required, Take x = wherever req
 
 
Section - A
Section A consists of 20 questions of 1 mark each.
1. If the distance between the points A(4, p) and B(1,0)
 
ix 5 units thon the value(s) of p is(are)
(a) 4 only (b) =4 only
() +4 (ao
Ans
Given, points are A(4, p) and (1,0).
d = Janay + FW)
5 =V(1-4)*+ (0p)?
25 =945"
pi = 25-9 =16
potd
‘Thus (c) is correct option,
2. For which value(s) of p, will the lines represented by
the following pair of linear equations be parallel
Sr-y-5 =0
6e-2y-p =0
(a) all real values except 10 (b) 10
© 5p (aie
Ans
We have, 3r=y=5 =0
 
  
and
Here,
and
Since given lines are parallel
Hehge
7b *
 
In figuro, on a citcle of radius 7 cm, tangent PTis
drawn from a point P such that PT = 24 em. If 0 is
tho contre of the circle, then the length of PR is
 
 
(a) 30 em (b) 28 cm,
(©) 2am (a) 25 em,
Ans
‘Tangent at any point of a circle is perpendicular to
the radius at the point of contact.Page 2
Thus or. Pr
Now in right-angled triangle PTO
OP = OT + PT
= (7)? + (24)?
= 494576
= 625
Thus OP = 25 em
Since OR = OT because of radii of circle,
PR = OP+ OR =25+7 =32 cm
Tins (c) is correct option
Each root of = b+
ronulting equation in 2222-4 1 = 0, the
  
 
(@) (yb
© (ab
Ans
For 2#— br+ ¢=0 we have
+6 =b and of =e
Now a-2+B-2satf—4=0-4
(28-2) = 08-20 +8)+4
=e-2b+4
For 2-22-4150 we have
Qab-dad
 
and lae-244
  
sen 2x6+4 ac-8
e=14+8=9
‘Thus (a) is correct option,
‘The centroid of the triangle whose vertices are (3, ~ 7)
(= 8,6) and (5, 10) is
(a) (0,9) (b) 0.3)
(©) (1.3) (a) 6.5)
Ans
 
ve (BEGINS Ta g-10) (9.9)
 
‘Thus (b) is correct option.
3)
is docreasod by 2. The
   
Sample Paper 5 Solutions
If the sum of the zeroes of the quadratic polynomial
ke? +22- 3k is equal to their produet, then equals
1
(a) 3
 
3
©}
ha
Wohave pla) =ke +224 38
Comparing it byad’+ bt e, we get a =k, b
and ¢ = 3k
costae, ots ated
 
 
Protuetafzerm, of = mS ms
According to qeotin, we bare
a+B =a8
2 2
~a8 eka}
‘Thus (d) is correet option.
 
cd
Tho n torm of the AP «, 8a, 5a, is
(a) na (b) @n=1)a
(©) Qntia (a) 2a
Ans
Given AP is a, 34, 5a
First term iv a and d = 3a—a = 2a
  
ni term a =at(n-Id
  
=0+(n=1)20
= 0+ 2na—2a
2na—
 
(Q2n-1)a
‘Thus (b) is correet option.
In an AP, if a= 3.5, d= 0 and n= 101, then a, will
 
(a) 0 (0) 35
(c) 103.5 (a) 104.5,
Foran AP, a =a¢(n~1)d
3.5+(101-1)x0
=35
‘Thus (b) is correct option,Page 3 Sam
 
« Paper 6 Solutions
 
If one zero of the quadratic polynomial 2+ 32+ ix cose" ~ (15° ~ 6] - see(15* ~ 8) ~ tans" +6) + ot" ~ (5° +4)
2, then the value of Fis ‘ isa U8
@i0 ihe = sec(15* - 6) — sec(15* — #) — tan(55* + 0)
(c) -7 (d) -2 +tan(55° +0)
Ans =0
We have pa) = 2432+ k 12, If the angle of depression of an object from a 75 m
162 iv a zero of p(2), thon we have high tower is 30°, then the distance ofthe object from
ws tho tower is
p(2) =0 (0) 573 m (b) 5078 m
(2)°+3Q2) +k =0 (©) V3 m (a) 150 m
4464k =0 Aus
+k =05k=-10
‘Thus (b) is correct option.
Wehave — tan30'
 
 
10. In the adjoining figure, OABC ix a square of wide
Zem. OAC is quadrant of a circle with O as centre.
 
 
 
  
   
 
 
    
 
‘The area of the shaded region is OB =T5V/3m
= A
° c Be
= Tower
B
Olobject)
Thus (¢) ia correet option,
A B
(a) 10.5 cm? (b) 38.5em?
(©) 49em? (a) 1.5 en?
Ans 13. The 2 digit number which becomes $th of itself when
digits are reversed. The difference in the digits of
Ragnar eneam(3- Le) eat the number being 1, then the two digits mumber ix
_ (ax Bx) (a) 45 (b) 54
a(pot, 2 * (a) None of these
=(7-4x? 2 (A) None of th
- (0 ete eee IC the two digs are 2 and y, then the mu
‘Thus (a) is correct option ete.
LL, The value of the expression Now — Sort y) = Oy +2
cosec(75° + 6) — sec(15" — 8) - tan(55* +6) + cot(35* — 6)
is Solving, we got 4Az-+ 55y
(a) =1 (b) 0 z£ =}
wt @y y
oe sa Solving thom, wo get 2= 5 and y= 4.
 
nber is 54
nm Thus (b) is correct option.
conoc(75* +) ~sec(15* ~ 0) ~ tan(55* + 8) + cot(35" —Page 4
ua
15.
16.
In the given figure, DEI BC. The value of EC is
 
QD
SY
B Cc
() Lem (b) Sem
(c) 2em (@) 1m
An:
Since, DE WBC
AD _ AE
DB BC
 
‘Thus (c) is correct option,
If the radius of the sphere is increased by 100%, the
volume of the corresponding sphere is increased by
(a) 200% (b) 500%
(c) 700% (a) 800%
Ans:
Let 1 be the original radius of sphere. If we increased
radius by 100 %. it will be 2r
vader
Me = $a (an)?
a4axse
= faxer
‘Thus now volume is 8 times of original volume,
Hence when the radins is increased by 100%, the
corresponding volume becomes 800% and thus
increase is 700%.
Thus (c) is correct option
 
The median and mode respectively of a frequency
dlistribution are 26 and 29, Then its mean is
(a) 275 (b) 245
(©) 284 (a) 258
Aus
 
 
 
W.
18.
 
Sample Paper 5 Solutions
Wo have 3My— 2M
3 x 26-2
 
 
2M =78-29=49
49
M a2 = 45
Thus (b) is correct option.
 
An event is very unlikely to happen. Its probability is
clonest to
(a) 0.0001 (b) 0.001
(6) 001 (aor
Ans
‘The probability of an event which is very unlikely to
happen is closest to zero and from the given options
0.0001 is closest to zero,
‘Thus (a) is correct option.
(24 IF 2 =0 has
(a) four real roots
(c) no real roots
(b) two real roots
(4) one real root
 
Ans
Webave (#4 1-2 =0
#+14+27-27 =0
#+241 50
(}+241=0
Let # = y then we have
wt+ytl=0
Comparing with ay’ + by +e = 0 wo get a= 1,
and ¢=1
 
D =#—4ac
=(1F-4@)0)
nee, D< 0, 9+ y+ 1 =0 has no real roots.
io #4241 20 oF (P+ 1F—2 = 0 has no real
roots
Thus (¢) is correct option.
Discriminant,
 
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DIRECTION : Inthe question number 19 and 30, a statement
of Ansertion (A) i followed by a statement of Reavon (R)
Choose the correction option,
19, Assertion : The value of y is 6, for which the distance
between the points P(2,— 3) and Q(10,y) is 10.
Reason : Distance between two given points
‘AC, 4) and B(x, y.) is given,
AB =V(n- 2) +(n- WF
(a) Both assertion (A) and reason (R) are true and
reason (R) is the correct explanation of assertion
(A).
(b) Both assertion (A) and reason (R) are true but
reason (R) is not the correct explanation of
assertion (A),
(c) Amertion (A) ix true but reason (R) is false,
(@) Assertion (A) is false but reason (R) in true,
An
PQ =10 Poel
Pg =100 =
(10-2f + (y+37 = 100
(+3) = 100-64 = 36
 
 
y+3 =+6
ya-36
y=3,-9
Assertion (A) is false but reason (R) is true.
Tins (s) is correct option.
20, Assertion : z13- iv a term
 
wating decimal fraction.
3.
m5
Reason : If q=2°5" where m,n are nownegative
integers, then £ is a terminating decimal fraction.
(a) Both assertion (A) and reason (R) are true and
reason (R) is the correct explanation of assertion
(a).
(b) Both assertion (A) and reason (R) are true but
reason (R) is not the correct explanation of
ausertion (A).
(c) Assertion (A) is true but reason (R) is false,
(a) Assertion (A) is false but reason (R) is true,
Aus
 
 
We have 8125 = st = 5x2
Sinco the factors of the denominator 3125 SES
is of the form 2" x 5%, ship is a terminating
‘decimal
 
Sample Paper 5 Solutions
Both sswertion (A) and reaso
(R) is the correet explanati
‘Thus (a) is correct option,
Section - B
Section B consists of 5 questions of 2 marks each.
21, In AABC,AD 1 BO, such that AD'= BD x CD.
Prove that 4 ABC is right angled at A.
Ans
  
[As per given condition we have drawn the figure
below.
 
A
B D C
Wo have AD! = BD x CD
AD _ BD
CD ~ AD
Since 2D = 90", by SAS we have
AADC -ABDA
and 4BAD = ZACD;
Since corresponding angles of similar triangles are
equal
ZDAC = ZDBA
£BAD+ £ACD+ 4 DAC+ 2 DBA = 180°
22 BAD+22DAC = 180°
ZBAD+ ZDAC = 90"
2A =90°
Thus AABC is right angled at A,
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0 get Mobile app Link Whatsapp at 89056 29969Page 6
22. In figure, a circle touches all the four sides of a
quadrilateral ABCD. If AB=6 em, BC=9 em and
CD=8 em, then find the length of AD.
c
 
Ans
[As per given information we have redrawn the figure
below.
 
Tangents drawn from an external point to a circle are
equal in length.
‘Thus AP = AS and let it be
Similarly, BP = BQ, CQ = CR and RD= DS
Now BP = 4B-AP =
 
BP = BQ =6-
CQ = BC- BQ =9- (6-2) =342
Now, CQ =CR =3+2
RD = CD-CR =8-(3+2)
Now, RD =DS =
  
 
AD = AS+SD =2+5
 
 
 
find the value of A.
Ans
We have tan2A = cot(A~18")
 
cot (90° = 24) = cot (A — 18°)
Tow 90°24 = A-18*
 
Sample Paper 6 Solutions
3A =
 
+18" = 108"
A =36"
Find the mean the following distribution
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
cas [35 [or [ro [ou [irs
Frequency [5 [10 [10 |7__ [8
Ans
Glass [Frequency [Mid-Vatue | £2,
i) (a)
35 |s 4 20
sz__|w 6 oo
v9 {to 8 80
ou |i 10 70
ui3_|s 2 96
Di=00 Din = 926
a Dla _ 326
Mean M a AIE = OP = 8.15
Find the mode of the following date :
lass: [0 ]20- [40- [60 [80- | 100. |120-
20 |40 |60 {80 }100 [120 | 140
Frequency |6_[a_[1o [12 [6
 
 
 
 
 
 
 
 
 
 
 
Ans
(Class 60-80 has the maxin
del class,
 
um frequency 12, therefore
  
26-6, $= 6 and h = 20
Moe, ae = 14 (AGE)
12-10
O43 I= 10Page 7
2%, Explain == why = (7X 13x 11)+11 and
(XEX5XAXIxX2x1)4+3 are composite
numbers,
Ans
(7x 13 x1) 411 = x (7 13-41)
=11x (+1)
aux 92
 
and
(TXOX5XAX 3x2 1)43
=3(7X 6X 5x 4x 2x 141)
=3 x (1681) =3 x 41 x 41
Since given numbers have more than two prime
factors, both number are composite.
or
Explain whether 3x 12 x 101 +4 is « prime number
‘or a composite number,
Ans
 
   
greater than 1 that cannot be formed by 1
two smaller natural numbers, A natural number
greater than 1 that is not prime is called a composite
number. For example, 5 is prime becanse the only
ways of writing it ax a product, 1x 5 or 5x1,
involve 5 itself, However, 6 is composite because i
is the product of two numbers (2 x 3) that are both
smaller than 6. Every composite mmber can be
written as the product of two or more (not necessarily
listinet) primes.
3X 12x 10144 =4(3 x 3x 10141)
= 2x 2x (10x 7x 13)
2x 2K 2K5XTX ID
   
= 4(909 +1)
= 4(010)
 
= a composite number
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= Chapterwise Gestion Benk of ll Subject
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‘So get Mobile pp Link Whatsapp at 89086 20060
Sample Paper 5 Solutions
Section - C
Section C consists of 6 questions of 3 marks each.
26, Tho sum of four consecutive mumber in AP is 32 and
the ratio of the product of the first and last term to
tho product of two middle terms is 7 : 15, Find the
numbers
Ans
Let the four conswentive terms of AP be (a—3d),
(a~d), (a+ d) and (a+ 30)
As per question statement we have
a-3d+a-d+a+d+a+3d =32
4a =32> 0 =8
  
 
z
and -$
we
5
960 — 135d" = 448 — 7
TE = 135d? = 448 - 960
1280 =-512
@ ated et?
Hence, the number are 2, 6, 10 and 14 or 14, 10, 6
and 2.
we that ; ot0-+eoseeO—1 _ 1+ cot
2B, Prove that : Sty E ese FT aint
Ans
cot + cosecd=1
2S = cot — cosec@ +1
atta!
Z-aa1
sin 0(cos0 + 1 ~ sind)
Sin O(cos= 1+ sind)
= sincos0 + sind — sin’
“sin8(cos0-+ sind ~ 1)
in Ocos + sin — (1 — cos*é)
O(cos6 + sind= 1)
 
 
   
 
ssin®(cos6+ 1) ~ (1 ~ cos*0)
= sin (cos + sin0= 1)
(1 + cos) (sind — 1 + cos6)
sind (cos + sind — 1)Page 8
  
ular park.
u. Find the area of the
 
whose cireumference is 88
 
1m be the width of road.
Circumference of « circular park,
2nr = 88m.
Inner radins of park,
+ = 88 2 88x7
On “Ix
=2x7=Mm
Outer radius of park including road width
 
Ra=rtw
=M+T=21m
‘Area of the road,
(R=) =x(R+ (R=)
= Bear + 1421-14)
2 95 x7 = 770m?
   
Hence, the arca of the rond is 70m’,
In Figure, PQ and AB are two ares of concentric
circles of radii 7 em and 3.5 cm respectively, with
centre O. If 2POQ= 30", then find the area of
shaded
 
Ans
 
redraw the given figure as below.
  
 
Sample Paper 5 Solutions
Q
        
Po
P
Area of shaded region
8 2272 (5,5)9.30%
alt= Agde = Fir'- 05)
= Br + 3.5)(7- 358) xy
Bei 1
Bxio5x35 xy
= 9.625 em?
29, Compute the mode for the following frequency
 
 
 
 
 
 
 
 
 
 
 
 
distribution:
Size of items [o- [4 [8 [12 ]16- Jao. Jas.
(in em) 8_|12 [16 |20 | 24 |28
Frequency [5 9 fiz [ia fro Jo
Ans
 
= 124246 = 14.46
30, Find the ratio in which P(4,m) divides the segment
Joining the points A(2,3) and B(6,~3). Hence find
Ans
Let P(2,y) be the point which divide AB in k:1
ratio,
(ym) k 1 Gam)
A(2,3) P(4,m) (6-3)
Now my, + 143,
‘me msPage 9
4 N41)
=49H1)
+
dk+d = 6k42
6k 4k = 4-2
2k =2ak
point P divides the line segment AB in 1:1
 
 
wnt may
v= me me
m =1X(-9)4109)
T+
=2343 29
aae8
Thus m=0,
In the given figure 4 ABC is an equilateral triangle
of side 3 units, Find the co-ordinates of the other two
vertices
 
Ans
The co-ordinates of B will be (2+3,0) or .(5,0)
Let coordinates of C be (zy). Since triangle ix
‘equilateral, wo have
AG = BC
(e= 27 (= OF = (2-5) +(y-0F
Peindety 7425-1004 OSE
Gr =21
 
=i
ty
and (2-2F +(V- OF
(2-2) +7 =
ft =9 or, =9-$
 
Sample Paper 5 Satins
Hesee © (5, 248).
31. Given that ¥‘5 is irrational, prove that 2V'5 ~ 3 is an
jonal munber.
 
Ans
 
Assume that 2¥5 = 3 is a rational umber. Therefore,
‘we ean write it in the form of F where p and g are
co-prime integers and q # 0.
low B-3—ek
N 2v5-3 :
whore q #0 and p and q are co-prime integers,
Rewriting the above expression as,
=2.
2Vv5 b+3
+3
%
Hero 243 iy rational because p and q are co
egors, thus’ should be a rational number. But
V5 iy irrational. This contradicts the given fact that
V5 is irrational. Hence 25-3 is an irrational
umber.
 
 
4
 
 
 
Section - D
Section D consists of 4 questions of 5 marks each.
82, For what value of &, which the following pair of linear
equatious have infinitely many solutions
2r-+ By = 7 and (k-+ I)r-+ (k= 1)y= 4k+1
Ans
Wo have Qe By 7
and (k+ 1)r4(2k—1)y = 4k+1
 
 
Hoe a2 be 3
a “EFT b= @k=1)
ant i eat
@ ~ Sake) ~ Gee)
For infinite many solutions
oh oe
a ha
For 4 =4 we have
@ eo
 
==
ri
2(4k-+1) = 7(+1)
Bk+2 =7h47Page 10
kes
Hence, the valne of & is 5, for which the given equation
have infinitely many solutions.
or
The cost of 2 kg of apples and 1kg of grapes on a day
was found to be Rs. 160. After a month, the cost of
kg of apples and 2kg of grapes is Rs, 300. Represent
the situations algebraically and geometrically.
Ans
Let the cost of 1 kg of apples be Rs.: and cost of 1 kg
of grapes be Rs. y.
The given conditions can be represented given by the
following equations
    
  
 
 
Bet y = 160 (1)
Ary = 300 (2)
From equation (1) y = 160-2
z 50 5
y oo 70
 
From equation (2) y = 150-22
 
5 50 40
y 50 70
 
 
 
 
 
Plotting these points on graph, we get two parallel
Tine as shown below.
Sseesezssae Ba.
 
 
 
Sample Paper 6 Solutions
 
3B. Prove that opposite side of a quadrilateral
circumseribing a circle subtend supplementary angles
fat the centre of the circle,
Ans
A circle centre O is inscribed in a quadrilateral ABCD
‘as shown in figure given below.
 
Since OE and OF are radius of circle,
OE =0F
‘Tangent drawn at any point of a circle is perpendicular
to the radius through the point contact.
Thus ZOEA = 2OFA= 90°
Now in 4 ABO and 4 AFO,
OE = OF
4OEA = ZOFA=90°
OA = 0A (Common side)
‘Thus AAEO = AAFO (SAS congruency)
27 =28
Similarly, 4122
“a=c4
25=26
 
Since angle around a point is 360°,
L14 224-234 £44 254 264-274 21
 
2L142L842244225 = 360"
214 £84 £44 25 = 180"
(214 28)4(244 25) = 180"
4AOB+ ZCOD = 180" Hence Proved.
34. The angles of depression of the top and hottom of an
8 m tall building from top of a multi-storeyed building
are 30° and 45°, respectively. Find the height of multi-
ing and distance between two buildingsPage 11
As per given in question we have drawn figure below.
B
 
 
A ©
 
 
Here AE= CD =8m
BE= AB- AE =(h-8)
and AC= DE =
Also, ZFBD = ZBDE= 30°
ZFBC = 2BCA = 45°
In right angled 4 CAB we have
 
(1)
In right angled 4 DB
+ = BE
tango* = 25
1.
Wyre
2 = V3(i-8) 2)
From (1) and (2), we get
ha VBh-8v8
8/3 =V3h-h
nw BYE y Bt1
Va-1* V341
= 4Y3(V3 +1) =(12-44V3) m
a = (1244/3)
Distance = (1244/3) m
 
Sinco, 2
 
=48+¥3) m
Hence the height of multi storey building is 4(3-+ 3)
 
Sample Paper 6 Solutions
Two poles of equal heights are standing opposite to
each other on either side of « road, which is 80m
wide, From a point between them on the road, angles
of elevation of their top are 30° and 60°. Find the
hoight of the poles and distance of point from poles.
Ans
Let the distance between pole AB and man E be 2,
As per given in question we have drawn figure below.
 
 
 
4 c
A h
b NA d
B—1—-E D
 
Here distance between pole CD and
In right angle triangle A ABE,
tango" =
A 4 Al)
Wr (a)
In angle triangle A CDE,
tango" =
 
h
V8 = WF
h es0v3—2V3 -Q)
Comparing (1) and (2) we have
w = 8073-23
 
2 s80X3-2x3
de = 240
240
s=teoon
Substituting this value of x in (1) we have
h = Dn 203
Hence, height of the pole is 34.64 mPage 12
35. A sold is in the form of a cylinder with hemispherical
nd. The total height of the solid is 20 em and the
‘diameter of the cylinder is 7 em, Find the total volume
of the solid, (Use w= #)
Ans
  
[As per given information in question we have drawn
the figure given below.
3.5em 35 em
re b+
-_—— tea
+ 20m ——4
Height of the eylinder,
h = (20-7) cm
Radius of cireular part,
 
Bem
 
r=tem
=F
Volume of solid,
= Volume of eylinder +2 x Volume of hemisphere
V anrth+2x (3x)
 
Section - E
Case study based questions are compulsory.
 
36. Maximum Profit : An automobile manufacturer ean
produce up to 300 cars per day. Tho profit made
from the sale of these vehicles ean be modelled by
the function P(2) =~ +350r~ 6600 where (2)
is the profit in thousand Rupees and is the number
‘of automobiles made and sold, Answer the following
questions based on this model:
(3) When no ears are produce what is a profit/los?
(Gi) What is the break even point ? (Zero profit point
is called break even) ?
(Gli) What is the profit/loss if 175 cars are produced
 
 
 
Sample Paper 5 Solutions
What is the profit if 400 cars are produced ?
 
Ans
(i) When no cars are produced,
P(0) =0+0~6600
6600
‘Thus when no cars are produced, there is loss of Rx
6600 Thousand,
(i) At break-even point P(2) = 0, thus
0 =~ + 3502—6600
2+ 3502+ 6600 = 0
 
 
 
2? — 3302-2024 6600 = 0
 
2(2~ 330) ~ 20(r4330) =0
(2= 330) (220) = 0
 
x = 20, 330
‘Thus break even oceur if 20 of $30 ears are produced,
(iii) When 175 cars are produce,
P(1T5) == (175)? + 350 (175) ~ 6600
24025
Thore is profit of Rs 24025 thousand if 175 car are
produced.
 
or
(iv) When 400 cars are produce,
P(400) == (400)? + 350 (400) ~ 6600
=~ 26600
There is loss of Rs 26600 thousand if 400 cars are
produced.
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80 get Nobile app Link Whatsapp at 20056 20969Page 13,
37. Rohan ix vory intelligent in maths, He always try to
relate the concept of maths in daily life. One day he it
walking aivay from the base of « lamp post at a speod
Of mf Lamp is 45. above the ground
~
 
 
B
(i) If after 2 second, length of shadow is 1 meter,
‘what is the height of Roban
(ii) What is the minimum time after which his shad-
   
‘ow will become larger than his original height?
What is the distance of Rehan from pole at this
point ?
(iii) What will be the length of his shadow after 4
  
  
seconds?
Ans:
(i) As per question statement we make the diagram
at following.
45 ml
a Dl E
At t= 2 seconds, BD =2x1=2m
DE =1m
Since, ABE ~ 4 CDE
AB _ BE _ BD+ DE
CD ~ DE ‘DE
2+
 
 
(ii) At point where shadow is equal to her heigh
CD =DE =15m
AB _ BE _ BD+DE
cb = DE =~ DE
 
 
Sample Paper 6 Solutions
45 = BDL
45 = BD+15
BD =45-15 =3m
Time to reach at BD, t=} =3 wee
 
As calculated in part (ii) we have BD = 3 m
    
(iii) After 4 sec, BD =1x 4 =4
AB _ BE _ BD DE
cb > DE ~~ BE
45 44 DE
Su ApDE
3DE =4+DE » DE =2m
jeal survey questions are questions asked to
the opinions and attitudes of potential voters
ical survey questions help you identify supporters
and understand what the public needs. Using
such questions, a pobtical candidate or ax
orgunization can formulate policies to gain
support from these people.
 
A survey of 100 voters was taken to gather inforn
oon critical issues and the demographic information
collected is shown in the table, Ono out of the 100
voters is to he drawn at random to be interviewed on
the India Today News on prime time.
 
 
 
 
 
 
 
Women [Men | Totals
Republican [17 20 37
Democrat [22 7 39
Indopendent [8 15
Green Party [6 3 5
Totals 53 a 100Page 14
(i) What is the probability the person is a woman or
a Republican ?
What is the probability the person is a Democrat
(ii) What is the probability the person i a Independ-
at men ?
(iii) What is the probability the person is a Independ-
nt men or green party men ?
Ans :
 
Total posible outcomes in all case is 100 because
there are total 100 person and out of which we have
to select one for interview.
n(8) = 100
(j) Person is a woman (W) or Republican (R),
Let B. be the event that the selected person is
woman or a Republican,
 
 
Favourable outcome, (i)
Probal
  
Person is a democrat,
 
Let E; be the event that the selected person is,
 
 
acest
Favourable outcome, (i) = 39
Probability p(n) = = y= 0.30
 
i) Person is a Independent n
Let B be the event that th
Independent
  
selected pernon is
 
Favourable outcome, n() =7
mB) __7
3) ~ 100
(iii) Person is a Independent men or green party men,
Let E, be the event that the selected person is
Independent men or green party men,
 
Probability, P(E)
   
 
Favourable outeon
 
Probability,
  
Sample Paper 5 Solutions
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