INDICES
CLASS LECTURE
1. The value of x
5 3/5
b
5/3 3/4
c
0 3/16
will be :
(a) 0
(b) 1
(c) x 3b5/4
(d) None of these
5n 3 6 5n 1
2. Simplify:
9 5n 5n 22
(a) 0
(b) 19
(c) 20
(d) NOT
3n 2 3n
3. For any real number n the value of n1 is-
3 3 n
(a) 2
(b) 3
(c) 4
(d) 0
9
4. If 9 x , then the value of x will be :
x
3
(a) 1/3
(b) 2/3
(c) 3
(d) 4/3
x ( x1)
9 8 2
5. If . , then the value of x is :
4 27 3
(a) 1
(b) 2
(c) 3
(d) 4
x 1 x3
a b
6. If , then x = ?
b a
(a) -1
(b) 1
(c) 2
(d) 3
2
32 3
22 2 2
7. Simplify
9 27
42 23
(a) 1
(b) 2
(c) 3
(d) 4
8. If 2 x 1 2 x 1 1,280, then the value of x is :
(a) 5
(b) 9
(c) 6
(d) 8
9. If 2 x 1 2 x 3 2560 , then the value of x is :
(a) 12
(b) 11
(c) 8
(d) 6
10. If 3 x 3 x1 18 , then the value of xx is :
(a) 3
(b) 8
(c) 27
(d) 216
11. If 2a+3b=17 and 2a+2-3b+1=5, then the value of a and b, respectively
is:
(a) 2, 3
(b) –2, 3
(c) 2, –3
(d) 3, 2
12. If a x b y c z and b2 ac , then y is equal to :
xz
(a)
xz
xz
(b)
2( x z )
xz
(c)
2( z x )
2xz
(d)
xz
13. If 2a 5b 400c , then the value of b in terms of a and c ?
3ac
(a) b
a 4c
2ac
(b) b
a 4c
3ac
(c) b
a 5c
8ac
(d) b
a 2c
1/ ab 1/ bc 1/ ca
x
a
x
b
x
c
14. Find the value of b . c . a
x x x
(a) 1
(b) 0
(c) x1/abc
(d) x1/( ab bc ca )
a b b c (ca )
x
a
x
b
x
c
15. Find the value of b c a
x x x
(a) 0
(b) x abc
(c) x a b c
(d) 1
21/ 2.31/ 3.41/4 34/ 3.57/5
16. The value of 1/5 3/5
3/5 is :
10 .5 4 .6
(a) 5
(b) 6
(c) 10
(d) 15
17. If 5 x 1 25 x 2 , find the value of 3 x 3 23 x
(a) 9/4
(b) 3/5
(c) 3/4
(d) 4/9
3
2
2 1 4 1 1
18. 3 ?
3 3 6
(a) -6561/128
(b) 6561/128
(c) 1
(d) None of these
2
1
1 1
3
5
19. (81)
4
x 20 27
32 2
(a) 1/8
(b) 8
(c) 1/4
(d) Not
3 27 n1 9 33 n1
20. .
8 3 5 (27)
3n n
(a) 28
(b) 30
(c) 25
(d) Not
SURDS
CLASS LECTURE
1. Rationalize the denominator of the following -
3
(a)
2 3
2
(b)
7 5
3 1
(c)
31
3
(d)
5 2
1 2
(e)
5 3
1
2. Rationalize
2 3 5
(a)
6 2 3 5
12
(b)
2 3 5
12
(c)
6 2 3 5
2
(d) NOT
2 2 4
3. Find the value of
7 5 5 3 7 3
(a) 2
(b) 0
(c) 3
(d) 5
4. What will be the value of
1 1 1 1 1
?
3 8 8 7 7 6 6 5 5 4
(a) 3 4
(b) 2 4
(c) 3 4
(d) NOT
1 1 1 1
5. What is the sum of .......
21 3 2 4 3 100 99
equal to :
(a) 3
(b) 9
(c) 10
(d) 11
7 5
6. If a b 35 , where a is positive integer, then the value of
7 5
a –b is :
(a) 7
(b) 8
(c) 5
(d) 3
5 3
7. If a b 15 then the value of a + b is :
5 3
(a) 2
(b) 3
(c) 3
(d) 5
11 3
8. If a b 33 then the value of a2 + b2 is :
11 3
25
(a)
8
9
(b)
13
8
(c)
25
13
(d)
9
9. Find the square root of the following :
(i) 10 2 21
(ii) 12 2 35
(iii) 9 56
(iv) 7 33
1 3 4
10. ?
11 2 30 7 2 10 84 3
(a) 0
(b) 1
(c) 2
(d) 3
5
11. Simplify -
14 6 5 14 6 5
(a) 1/2
(b) 1/4
(c) 1/3
(d) 1/6
1/ 2 1/ 2 7
12. 28 10 3 74 3 =?
16 6 7 16 6 7
(a) 3/2
(b) 7/2
(c) 5/2
(d) 9/2
13. Find the value of 12 68 48 2 .
(a) 2 2
(b) 2 2
(c) 2
(d) 1
14. Find the value of 8 8 8 8 ...... .
(a) 2
(b) 4
(c) 6
(d) 8
15. Simplify 5 5 5 5 5 .
(a) 531/32
(b) 516/30
(c) 58/14
(d) 59/14
16. 3 3 3 3 ?
15
16
(a) 3
16
15
(b) 3
31
32
(c) 3
(d) 3
17. Find the value of 30 30 30 30....... .
(a) 5
(b) 6
(c) 4
(d) 3
18. Find the value of 30 30 30 30....... .
(a) 5
(b) 6
(c) 4
(d) 3
19. Find the value of 3 3 3 .......... .
13 1
(a)
2
13 1
(b)
3
13
(c)
2
13 3
(d)
2
20. Find the value of 5 5 5.... .
(a) 21
(b) 21 1
21 1
(c)
21 1
(d)
2
21. Find the value of√ √ √ √
21 1
(a)
2
25 1
(b)
2
21 3
(c)
2
25 3
(d)
2
22. Find the value of√ √ √ √
21 1
(a)
2
21 1
(b)
2
21 3
(c)
2
25 3
(d)
2
23. Which number is largest among 2, 6 3, 3 4, 4 5 ?
(a) 2
(b) 6 3
(c) 3 4
(d) 4 5
24. Which number is smallest among 2, 3 3, 4 4, 6 6 ?
(a) 2
(b) 3 3
(c) 4 4
(d) 6 6
25. Which is the greatest number in 2 5, 6 3, 3 7 and 8 2 .
(a) 8 2
(b) 2 5
(c) 6 3
(d) 3 7
26. Which expression is greatest among
19 17 , 13 11 , 7 5 and
5 3 ?
(a) 19 17
(b) 13 11
(c) 7 5
(d) 5 3
27. If a 8 7,b 7 6 and c 6 5 then which is the
correct option in the following ?
(a) a > b > c
(b) a < b < c
(c) b < a < c
(d) a < c < b
28. Smallest number in 8 5, 7 6, 10 3 and 11 2 .
(a) 8 5
(b) 7 6
(c) 10 3
(d) 11 2
29. Find the value of 10 10 10............. .
(a) 1000
(b) 10
1
(c)
1000
(d) 3 10
30. Which is the smallest number among 2250 , 3200 , 5100 and 4200
(a) 4200
(b) 5100
(c) 3150
(d) 2250
INDICES & SURDS
PRACTICE SHEET
1. If 56 75 60 84 210 2 p 3q 5r 7 s then what is the value of
( p q)
s r ? (SSC CGL Tier-I 2019)
(a) 6
(b) 8
(c) 12
(d) 10
2. The value of 6 17 2 72 nearest to? (SSC CGL Tier-1 2019)
(a) 2.1
(b) 2.7
(c) 1.7
(d) 2.4
1
3. The value of nearest to? (SSC CGL Tier-1 2020)
74 3
(a) 4.1
(b) 3.7
(c) 1.2
(d) 4.2
1 3 2 2 32 2
4. If a b 2 , then what is the valuve of
4 8 32 2 3 2 2
(3a 4b) ? (SSC CGL Tier-II 2019)
1
(a) 99
2
(b) 99
1
(c) 98
2
(d) 98
15( 10 5)
5. The expression is equal to :
10 20 40 5 80
(a) 5 2 2 (SSC CGL Tier-II 2019)
(b) 5 2 2
(c) 5(3 2 2)
(d) 10(3 2 5)
73 5 73 5
6. The value of lies between : (SSC CGL Tier-II 2019)
3 5 3 5
(a) 2 and 2.5
(b) 3 and 3.5
(c) 1.5 and 2
(d) 2.5 and 3
7. If x 3 3 8 7 4 3 where x > 0, then the value of x is
equal to : (SSC CGL Tier-II 2019)
(a) 2
(b) 4
(c) 1
(d) 3
8 2 15 1
8. The value of 5 is equal to :
4 8 2 15
(a) 1 (SSC CGL Tier-II 2019)
(b) 1/4
(c) 2/3
(d) 1/2
8 2 3
9. If a 3 b , then the value of a + b is equal to
3 35
(a) 16 (SSC CGL Tier-II 2019)
(b) 18
(c) 15
(d) 24
10. If ( 2 5 3) k 12 , then what will be the value of k?
(a) ( 2 5 3)(2 5) (SSC CGL Tier-II 2018)
(b) ( 2 5 3)(2 10)
(c) ( 2 5 3)(2 5)
(d) ( 2 5 3)
11. If 86 60 2 a b 2 , then what will be the value of a 2 b 2 ,
correct to one decimal place? (SSC CGL Tier-II 2018)
(a) 8.4
(b) 7.8
(c) 8.2
(d) 7.2
12. The expression 10 2( 6 15 10 is equal to :
(a) 3 2 5 (SSC CGL Tier-II 2018)
(b) 3 2 5
(c) 3 2 5
(d) 2 3 5
13. If 10 2 21 8 2 15 a b , where a and b are positive
integers, then the value of ab is closest to (SSC CGL Tier-II 2018)
(a) 4.6
(b) 5.9
(c) 6.8
(d) 7.2
14. The value of 9 2 11 6 2 is nearest to : (SSC CGL Tier-II 2018)
(a) 2.4
(b) 2.7
(c) 2.9
(d) 2.1
2 10 52 3
15. The value of is :
5 2 7 52 72
(a) 2 2 (SSC CGL Tier-II 2018)
(b) 2 5
(c) 2
(d) 7
3 45 605 245
16. Let x 27 6 and y
6
then the value of
4 80 125
x 2 y 2 is : (SSC CGL Tier-II 2018)
223
(a)
36
221
(b)
36
221
(c)
9
227
(d)
9
17. Which of the following is TRUE? (SSC CGL Tier-II 2017)
1 1 1 1 1 1
I. 3 4 II. 4 3
12 29 5 29 12 5
1 1 1 1 1 1
III. 3 4 IV. 4 3
5 12 29 5 29 12
(a) Only I
(b) Only II
(c) Only III
(d) Only IV
18. Which of the following is TRUE? (SSC CGL Tier-II 2017)
I. 3 11 7 4 45 II. 7 3 11 4 45
III. 7 4 45 3 11 IV. 4 45 7 3 11
(a) Only I
(b) Only II
(c) Only III
(d) Only IV
19. What is the value of 4600 540 1280 250 36 ?
(a) 69 (SSC CGL Tier-II 2017)
(b) 68
(c) 70
(d) 72
20. If (333 333 333 )(233 233 ) 6 x , then what is the value of x?
(a) 34 (SSC CGL Tier-II 2017)
(b) 35
(c) 33
(d) 33.5
21. Which of the following statement(s) is/are correct?
I. (65)1/6 (17)1/4 (12)1/3 (SSC CGL Tier-II 2017)
II. (17)1/4 (65)1/6 (12)1/3
III. (12)1/3 (17)1/4 (65)1/6
(a) Only I
(b) Only III
(c) Only II
(d) None of these
22. Which of the following statement(s) is/are TRUE?
I. 333 333 II. 333 (33 )3 (SSC CGL Tier-II 2017)
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
23. Which of the following statement(s) is/are correct?
2 3 5
I. (SSC CGL Tier-II 2017)
3 5 2 5 4 3
3 2 7
II.
2 5 3 3 4 5
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
24. Which of the following statement(s) is/are correct?
I. 11 7 10 8 (SSC CGL Tier-II 2017)
II. 17 11 15 13
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
25. Which of the following statement(s) is/are correct?
I. 12 3 16 4 24 (SSC CGL Tier-II 2017)
II. 3 25 4 32 6 48
III. 4 9 3 15 6 24
(a) Only I and II
(b) Only I and III
(c) Only I
(d) All are true
26. Which of the following statement(s) is/are TRUE?
I. 5 5 7 3 (SSC CGL Tier-II 2017)
II. 6 7 8 5
III. 3 9 6 6
(a) Only I
(b) Only I and II
(c) Only II and III
(d) Only I and III
1 1
27. What is the value of (2 2) (2 2) ?
2 2 2 2
(a) 2 (SSC CGL Tier-II 2017)
(b) 4
(c) 8
(d) 6
3 2 1 1 3
28. The simplified value of 27 27 is closest to :
12 8 3 2
(a) 3 1 (SSC CGL Tier-II 2016)
(b) 1 3
(c) 3 1
(d) 3 1
27
29. 2197 125
3 3 3 ? (SSC CGL Tier-II 2016)
512
(a) 492/7
(b) 520/3
(c) 554/7
(d) 571/5
1 1
1 2 6 3
p q pq
3 3
30. 3 2 2 3 pa q b , then the value of a+b where p and q
pq p q
are different positive primes is- (SSC CGL Tier-II 2015)
(a) 2/3
(b) –2/3
(c) 3/4
(d) 0
62 7 2 82 92 102
31. is equal to: (SSC CGL Tier-II 2015)
74 3 4 2 3
(a) 355
(b) 330
(c) 366
(d) 305
2
x y
3 3
32. In (3x–2y) : (2x+3y) = 5 : 6, then one of the value of 3 is-
x y
3
(a) 5 (SSC CGL Tier-II 2015)
(b) 25
(c) 1/5
(d) 1/25
27 x
33. If 1 1 , then x equal to:- (SSC CGL Tier-II 2014)
169 13
(a) 13
(b) 3 3
(c) 1
(d) 27
34. If m 5 5 5 ........ and n 5 5 5 ........ then among
the following the relations between m and n holds is :
(a) m + n – 1 = 0 (SSC CGL Tier-II 2014)
(b) m – n – 1 = 0
(c) m – n + 1 = 0
(d) m + n + 1 = 0
1 1 1 1 1 1
35.
1 2 2 3 3 4 4 5 5 6 6 7
1 1
=? (SSC CGL Tier-II 2014)
7 8 8 9
(a) 0
(b) 1
(c) 2
(d) 4
2 3
36. Square root of is: (SSC CGL Tier-II 2014)
2
(a)
1
2
32
(b)
1
2
3 1
(c)
1
2
31
(d) None of these
1/ 2
37. If a = 64 and b = 289, then the value of a b b a is:
(a) 21/2 (SSC CGL Tier-II 2013)
(b) 2
(c) 4
(d) –2
3
38. 2 4 2 4 2 3 4.... ?
3
(SSC CGL Tier-II 2013)
(a) 2
(b) 22
(c) 23
(d) 25
3 2 4 3 6
39. The value of
3 6 6 2 2 3
(a) 2 (SSC CGL Tier-II 2013)
(b) 0
(c) 3
(d) 6
40. The real value of x, that satisfies the equation
4 x 9 4 x 9 5 7 is: (SSC CGL Tier-II 2012)
3
(a)
7
(b) 4
(c) 5
(d) 2 3
41. If 28 6 3 3a b, (where a, b are rational), value of (a+b) is-
(a) 1 (SSC CGL Tier-II 2012)
(b) –1
(c) –2
(d) 2
42. 6 6 6 ...... is equal to- (SSC CGL Tier-II 2011)
(a) 2
(b) 5
(c) 4
(d) 3
43. The greatest number among 5, 3 4, 5 2, 7 3 is :
3
(a) 4 (SSC CGL Tier-II 2010)
7
(b) 3
(c) 5
5
(d) 2
7
44. ? (SSC CGL Tier-II 2010)
16 6 7 16 6 7
(a) 1/2
(b) 1/3
(c) 1/4
(d) 1/5
45. The largest among the numbers 7 5, 5 3, 9 7,
11 9 is : (SSC CGL Tier-II 2010)
(a) 7 5
(b) 5 3
(c) 9 7
(d) 11 9
26 7 3 ba 3
46. If , b 0 then what is the value of (b a ) ?
14 5 3 11
(a) 5 (SSC CGL Tier-II 2020)
(b) 25
(c) 12
(d) 9
38 5 3 ab 3
47. If , b 0 then what is the value of (b a ) ?
26 7 3 23
(a) 7 (SSC CGL Tier-II 2020)
(b) 18
(c) 29
(d) 11
48. If 847 × 385 × 675 × 3025 = 3a × 5b × 7c × 11d, then the value of ab –
cd is : (SSC CGL Tier-II 2020)
(a) 4
(b) 5
(c) 1
(d) 7
1 1 1 1
49. The value of
4 15 15 14 14 13 13 12
1 1 1 1
is : (SSC CGL Tier-II 2020)
12 11 11 10 10 3 3 8
(a) 2 2 2
(b) 2 2 2
(c) 4 2 2
(d) 4 2 2
22 2
50. If a 5b , with a, b > 0, then what is the value of
4 2 3 5
(ab) (a + b)? (SSC CGL Tier-II 2020)
(a) 8 : 7
(b) 4 : 7
(c) 7 : 8
(d) 7 : 4