Class 12 : Practical File Programs

Question:6

Write a python script to take input for a number and print its table?

n=int(input("Enter any no "))
i=1
while(i<=10):
    t=n*i
    print(n," * ",i," = ",t)
    i=i+1

Output:

Enter any no 5
5 * 1 = 5
5 * 2 = 10
5 * 3 = 15
5 * 4 = 20
5 * 5 = 25
5 * 6 = 30
5 * 7 = 35
5 * 8 = 40
5 * 9 = 45
5 * 10 = 50
>>>

Questions:7

Write a python script to take input for a number and print its factorial?

n=int(input("Enter any no "))
i=1
f=1
while(i<=n):
    f=f*i
    i=i+1
print("Factorial = ",f)

Output:

Enter any no 5
Factorial = 120
>>>

Question:8

Write a python script to take input for a number check if the entered number is Armstrong or not.

n=int(input("Enter the number to check : ")) 
n1=n 
s=0 
while(n>0):
    d=n%10; 
    s=s + (d *d * d) 
    n=int(n/10) 
if s==n1: 
    print("Armstrong Number") 
else: 
    print("Not an Armstrong Number")

Output:

Enter the number to check : 153
Armstrong Number
>>>

Output:

Enter the number to check : 152
Not an Armstrong Number
>>>

Question:9

Write a python script to take input for a number and print its factorial using recursion?

Sol:

#Factorial of a number using recursion
def recur_factorial(n):
   if n == 1:
       return n
   else:
       return n*recur_factorial(n-1)
#for fixed number
num = 7
#using user input
num=int(input("Enter any no "))
check if the number is negative
if num < 0:
   print("Sorry, factorial does not exist for negative numbers")
elif num == 0:
   print("The factorial of 0 is 1")
else:
   print("The factorial of", num, "is", recur_factorial(num))

Output:

Enter any no 5
The factorial of 5 is 120
>>>

Question:10

Write a python script to Display Fibonacci Sequence Using Recursion?

Sol:

#Python program to display the Fibonacci sequence
def recur_fibo(n):
   if n <= 1:
       return n
   else:
       return(recur_fibo(n-1) + recur_fibo(n-2))
nterms = 10
#check if the number of terms is valid
if (nterms <= 0):
   print("Plese enter a positive integer")
else:
   print("Fibonacci sequence:")
   for i in range(nterms):
       print(recur_fibo(i))

Output:

Fibonacci sequence:
0
1
1
2
3
5
8
13
21
34
>>>

CBSE Class 12 @ Python

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