CSC-Practicals

-Answer key

1)WRITE A PYTHON PROGRAM TO FIND THE GIVEN NUMBER IS A PRIME NUMBER OR NOT.

Ans: n = int(input("Number: "))

if n > 1:

for i in range(2, (n//2) + 1):

if n % i== 0:

print(n, "is not a prime number")

break

else:

print(n, "is a prime number")

break

else:

print(n, "is a prime number")

else:

print("Number should be greater than 1")

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2) WRITE A PYTHON PROGRAM TO FIND THE GIVEN NUMBER IS A PERFECT NUMBER OR NOT.

Ans: n = int(input("Number: "))

sum = 1

for i in range(2, n+1):

if sum >= n:

break

sum += i

if sum == n:

print("It's a perfect square")

print("It is not a perfect square")

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3) WRITE A PYTHON PROGRAM TO FIND LCM AND GCD OF THE GIVEN 2 NUMBERS.

Ans: x=int(input("X: "))

y=int(input("Y: "))

if x>y:

smaller = y

else:

smaller = x

for i in range(1, smaller+1):

if x%i == 0 and y%i == 0:

hcf = i

lcm = (x*y)//hcf

print("HCF: ", hcf)

print("LCM: ", lcm)

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4) WRITE A PYTHON PROGRAM TO FIND THE GIVEN N DIGIT NUMBER IS A DIGIT PALINDROME OR
NOT.

Ans: n = 121

a = n%10

b = n//100

if a == b:

print("It's a palindrome")

else:

print("It's not a palindrome")

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5) WRITE A PYTHON PROGRAM TO PRINT THE REVERSE OF THE GIVEN N DIGIT NUMBER.

Ans: n = int(input("Number: "))

reverse_number= 0

while n > 0:

remainder = n % 10

reverse_number= (reverse_number* 10) + remainder

n //= 10

print("The reverse number is ", reverse_number)

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6) WRITE A PYTHON PROGRAM TO FIND THE GIVEN N DIGIT NUMBER IS AN ARMSTRONG

Ans: n = int(input("Value: "))

sum = 0

a=0

b=n

Check = n

remainder = 0

while b > 0:

a += 1

b //= 10

while n > 0:

remainder = n%10

sum += remainder ** 3

n //= 10

if sum == Check:

print("It's an Armstrong number")

else:

print("It's not an Armstrong number")

Ans: n = int(input("Value: "))

sum = 0

while n > 0:

sum += n%10

n //= 10

print(sum)

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8) WRITE A PYTHON PROGRAM TO FIND THE SMALLEST AND SECOND SMALLEST NUMBER FROM
THE USER INPUT.

Ans: a = int(input("Value of A: "))

b = int(input("Value of B: "))

c = int(input("Value of C: "))

Smallest_NoA= 0

Smallest_NoB= 0

if a > b:

Smallest_NoA= b

Smallest_NoB= a

else:

Smallest_NoA= a

Smallest_NoB= b

if Smallest_NoA> c:

Smallest_NoB= Smallest_NoA

Smallest_NoA= c

elif Smallest_NoB> c:

Smallest_NoB= c

print(Smallest_NoA, Smallest_NoB)

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9) WRITE A PYTHON PROGRAM TO FIND THE SUM OF ODD NUMBERS AND EVEN NUMBERS GIVEN
AS INPUT.

Ans: n = int(input(""))

Oddsum= 0

EvenSum= 0

for i in range(1, n+1):

if i%2 == 0:

EvenSum+= i

else:

Oddsum+= i

print("OddSum:", Oddsum, "EvenSum:", EvenSum)

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10) WRITE A PYTHON PROGRAM TO FIND THE LARGEST AND SECOND LARGEST NUMBER FROM
THE USER INPUT.

Ans: a = int(input("Value of A: "))

b = int(input("Value of B: "))

c = int(input("Value of C: "))

LargestNoA= 0

LargestNoB= 0

if a > b:

LargestNoA= a

LargestNoB= b

else:

LargestNoA= b

LargestNoB= a

if LargestNoA< c:

LargestNoB= LargestNoA

LargestNoA= c
 elif LargestNoB< c:

LargestNoB= c

print(LargestNoA, LargestNoB)

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11) Write a python program to find the prime factors of a given number.

Ans:

n = int(input("Enter no: "))

for i in range(1, n+1):

if n%i == 0:

count = 0

for j in range(1, i+1):

if i%j == 0:

count += 1

if count == 2:

print(i)

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12) Write a python program to generate the Fibonacci series of n

Ans:

n = int(input("Terms: "))

n1, n2 = 0, 1

nth = 0

for i in range(1, n+1):

print(n1)

nth = n1 + n2
 n1 = n2

n2 = nth

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13) Write a python program to print the given pattern

1
12
123
1234
1 2345

Ans:
for i in range(1, 6):

for j in range(1, i+1):

print(j, end="")

print()

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14) Write a python program to print the given pattern

A
AB
ABC
ABCD
ABCDE

Ans:

for i in range(65, 70):

for j in range(65, i+1):

print(chr(j), end="")

print()
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15) Write a python program to print the given pattern

54321
5432
543
54
5

Ans:

for i in range(1, 6, 1):

for j in range(5, i-1, -1):

print(j, end="")

print()

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16) Write a python program to print the given pattern

1
22
333
4444
55555

Ans:

for i in range(1, 6):

for j in range(1, i + 1):

print(i, end="")

print()

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17) Writea python program to find the sum of the series 1 +
(1+22)+(1+22+32)+… n terms.

Ans:

n = int(input("Terms: "))

sum = 0

for i in range(1, n+1):

for j in range(1, i+1):

sum += j ** 2

print(sum)

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18) Write a python program to check the given character is a digit,

Ans:

number = int(input("Number: "))

if number >= 65 and number <= 90:

print("Uppercase Alphabet:", chr(number))

elif number >= 97 and number <= 122:

print("Lowercase Alphabet:", chr(number))

elif number >= 48 and number <= 57:

print("Digit:", chr(number))

else:

print("SpecialCharacter:", chr(number))
19) Write a python program to find Factorial of given number.

Ans:

num = int(input("Num: "))

factorial = 1

if num < 0:

print("Negative!Invalid")

elif num == 0:

print("factorial of", num, "is", 1)

else:

for i in range(1, num+1):

factorial *= i

print("factorial of", num, "is", factorial)

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20) Write a python program to find the given quadratic equation

Ans:

a = float(input("a: "))

b = float(input("b: "))

c = float(input("c: "))

d = b ** 2 - 4 * a * c

if d > 0:
 print("Real Roots", d)

elif d < 0:

print("Imaginary Roots", d)

else:

print("EqualRoots", d)

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