Practice Questions of Loops in Python — Test 1

Q1. Write the output of the following:

1.  for i in "Myblog":
         print (i, '?')

Show AnswerAns. 
M ?
y  ?
b ?
l  ?
o ?
g ?


2.  for i in range(5):
        print(i)

Show Answer
Ans.
0
1
2
3
4

3. for i in range(10,15):
        print(i)

Show Answer
Ans.
10
11
12
13
14

Q2. Write a program to print first 10 natural number.
Show Answer
Ans.
for i in range(1,11):
      print(i)

Q3. Write a program to print first 10 even numbers.
Show AnswerAns.
for i in range(2,22,2):
     print(i)

Q4. Write a program to print first 10 odd numbers.
Show Answer
Ans.
for i in range(1,21,2):
      print(i)

Q5. Write a program to print first 10 even numbers in reverse order.
Show AnswerAns.
for i in range(20,0,-2):
      print(i)

Q6. Write a program to print table of a number accepted from user.
Show Answer
Ans.
num = int(input("Enter any number")
for i in range(1,11):
      print(num*i)

Q7. Write a program to display product of the digits of a number accepted from the user.
Show Answer
Ans.

num=int(input("Enter any number"))
p=1
while(num):
   r=num%10
   p=p*r
   num=num//10
print("Product of digits is",p)

Q8. Write a program to find the factorial of a number.
Show Answer
Ans.
num=int(input("Enter any number"))
f=1
for i in range(1,num+1):
    f=f*i
print("Factorial is",f)

Q9. Write a program to find the sum of the digits of a number accepted from user
Show Answer
Ans.
num=int(input("Enter any number"))
s=0
while(num):
   r=num%10
   s=s+r
   num=num//10
print("Sum of digits is",s)

Q10. Write a program to check whether a number is prime or not.
Show Answer
Ans.
num=int(input("Enter any number"))
f=0
if num==1 or num==0:
     f=1
for i in range(2,num):
     if num%i==0:
          f=1
if f==1:
     print("Number is not prime")
else:
     print("Number is prime")

Practice Questions of Loops in Python — Test 2

Q1. Write the output of the following

1. for i in (1,10):
       print(i)
Show AnswerAns
1
10


2. for i in (5,9):
       print(i)
Show AnswerAns.
5
9

3. for i in range(2,7):
       print(i)
Show AnswerAns.
2
3
4
5
6


4. for i in "csiplearninghub":
       print(i)
Show AnswerAns.
c
s
i
p
l
e
a
r
n
i
n
g
h
u
b


5. for i in "python":
       print(i, end=' ')
Show AnswerAns.
p y t h o n


6. for i in "python":
      print(i, end=='?')
Show AnswerAns.
p?y?t?h?o?n?


7. for i in "python":
        print(i, '?$')
Show AnswerAns.
p?$y?$t?$h?$o?$n?$


8. for i in (1,2,3,4):
       print(i)
Show AnswerAns.
1
2
3
4


9. for i in (3,4,7):
      print(i)
Show AnswerAns.
3
4
7

10. for i in range(2,10,2):
     print(i)
Show AnswerAns
2
4
6
8

Practice Questions of Loops in Python — Test 3

Q1. Write the output of the following code :

[1]

x=5while(x<15):print(x**2)x+=3
Show Answer

25
64
121
196
 

[2]

a=7b=5while(a<9):print(a+b)a+=1
Show Answer

12
13

[3]:

b=5while(b<9):print("H")b+=1
Show Answer

H
H
H
H

[4]:

b=15while(b>9):print("Hello")b=b-2
Show Answer
Hello
Hello
Hello

[5]:

x=15
while(x==15):
  print("Hello")
  x=x-3

Show Answer
Hello

[6]:

x="123"foriinx:print("a")Show Answer
a
a
a

[7]:

i=9whileTrue:ifi%3==0:
    breakprint("A")Show Answer

Loop will not execute

[8]:

a=6while(a<=10):print("a")a+=1Show Answer
a
a
a
a
a

[9]:

i=0whilei<3:print(i)i=i+1else:print(7)Show Answer
0
1
2
7

[10]:

i=0whilei<3:print(i)i=i+1print(0)Show Answer
0
0
1
0
2
0

[11]:

i=2forxinrange(i):i+=1print(i)print(i)Show Answer
3
3
4
4

[12]:

i=2forxinrange(i):x+=1print(x)print(x)Show Answer
1
2
2

[13]:

i=2forxinrange(i):x+=1print(x)print("x")Show Answer
1
x
2
x

[14]:

i=100
while i<57:
  print(i)
  i+=5Show Answer

Loop will run infinite times

Practice Questions of Loops in Python — Test 4

Q1. Write program to print the following pattern.

1 2

1 2 3

1 2 3 4

* * * *

* * *

* *

Show AnswerAns a)

for i in range(1,5):

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

        print(j,end=" ")

    print()

Ans b)

for i in range(4,0,-1):

    for j in range(i):

        print("*",end=" ")

    print()

Q2. Accept 10 numbers from the user and display their average.

Show AnswerAns.

s=0

for i in range(10):

n=int(input("Enter number"))

s=s+n

print("Average of 10 numbers is ",s/10)

Q3. Write a program to print all prime numbers that fall between two numbers including both(accept two numbers from the user)

Show AnswerAns. 

def primn(num):

   f=0

   if num==1 or num==0:

      f=1

   for i in range(2,num):

      if num%i==0:
  
      f=1

   if f==1:

      return 'n'

   else:

      return 'y'

num1=int(input("Enter first number"))

num2=int(input("Enter Second number"))

if num1>num2:

   for i in range(num2,num1+1):

      r=primn(i)

      if r=='y':

         print(i)

else:

   for i in range(num1,num2+1):

      r=primn(i)

      if r=='y':

         print(i)

Q4. Write a program to display sum of odd numbers and even numbers that fall between 12 and 37(including both numbers)

Show AnswerAns:

so=0

se=0

for i in range(12,38):

   if i % 2==0:

      se=se+i

   else:

      so=so+i

print("Sum of all even numbers is ",se)

print("Sum of all odd numbers is ",so)

Q5. Write a program to display all the numbers which are divisible by 11 but not by 2 between 100 and 500.

Show AnswerAns.
for i in range(100,500):

   if i%11==0 and i%2!=0:

      print(i)

Q6. How many times the following loop execute?

c = 0

while c < 20:

      c += 2

Show Answer

Q7. Write the output of the following.

c = -9
while c < 20:
  c += 3
  print(c)

Show Answer
Ans. 

-6
-3
0
3
6
9
12
15
18
21

Q8. Write a program to print numbers from 1 to 20 except multiple of 2 & 3.

Show AnswerAns.

for i in range(1,21):
   if i%2!=0 and i%3!=0:
       print(i)

Q9. Write a program to print table of a number(accepted from user) in the following format.

Like : input number is 7, so expected output is

7 * 1 = 7

7 * 2 = 14 and so on

Show AnswerAns.
num = int(input("Enter any number"))

for i in range(1,11):

    print(num,"*",i,"=",num*i)

Q10. Write a program that keep on accepting number from the user until user enters Zero. Display the sum and average of all the numbers.

Show AnswerAns.

num=1

i=-1

s=0

while(num!=0):

   num=int(input("Enter any number"))

   s=s+num

   i=i+1

print("Average of numbers entered by you is ",s/i)

Practice Questions of Loops in Python — Test 5

Q1. Write a program to print the following pattern

5 5 5 5 5
4 4 4 4
3 3 3
2 2
1

Show AnswerAns.

for i in range(5,0,-1):

   for j in range(1,i+1):

       print(i,end=" ")

   print()

Q2. Find errors in the following code:

a = int(“Enter any number”)
for i in Range[2,6]
    if a=i
      print(“A”)
    else
      print(“B”)

Show Answer
Ans.

a = int(input(“Enter any number”))

for i in range(2,6):

    if a==i:

      print(“A”)

    else:

      print(“B”)

Q3. Write a program to accept decimal number and display its binary number.

Show AnswerAns. 

num=int(input("Enter any number"))

l=[]

while(num):

   r=num%2

   l.append(r)

   num=num//2

for i in range(len(l)-1,-1,-1):

   print(l[i],end=" ")

Q4. Accept a number and check whether it is palindrome or not.

Show Answer

Ans.

num=int(input("Enter any number"))

ornum=num

rn=0

while(num):

    r=num%10

    rn=rn*10+r

    num=num//10

if ornum==rn:

    print("Number is Palindrome")

else:

    print("Number is not a Palindrome")

Q5. Write a program to accept a number and check whether it is a perfect number or not.

(Perfect number is a positive integer which is equal to the sum of its divisors like divisors of 6 are 1,2,3, and

sum of divisors is also 6, so 6 is the perfect number)

Show AnswerAns. 

num=int(input("Enter any number"))

s=0

for i in range(1,num):

   if num%i==0:

      s=s+i

if num==s:

   print("Number is perfect")

else:

   print("Number is not perfect")

Q6. Write a program to find the sum of the following series(accept values of x and n from user)

1 + x/1! + x²/2! + ……….xⁿ/n!

Show AnswerAns

import math

n=int(input("Enter number of terms"))

x=int(input("Enter the base"))

s=1.0

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

   s=s+math.pow(x,i)/math.factorial(i)

print(s)

Q7. Write a program to print the following pattern

A
B C
D E F
G H I J
K L M N O

Show AnswerAns.

l=65

for i in range(1,6):

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

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

    l=l+1

print()

l=65

Q8. Write a program to find the sum of following (Accept values of a, r, n from user)

a + ar + ar² + ar³ + ………..arⁿ

Q9. Write the output of the following

for x in range(10,20):   

   if (x%2==0):

      continue

      print(x)

Show Answer
Ans. No Output

Q10. Write a function to display prime numbers below any number accepted from the user.

Show AnswerAns. 

def primn(num):

   f=0

   if num==1 or num==0:

       f=1

   for i in range(2,num):

       if num%i==0:

       f=1

   if f==1:

       return 'n'

   else:

       return 'y'

num=int(input("Enter number"))

for i in range(num):

  r=primn(i)

  if r=='y':

      print(i)

Practice Questions of Loops in Python — Test 6

Q1. Write the output of the following.

a=5
while a>0:
print(a)
a=a-1

Show AnswerAns.
5
4
3
2
1

Q2. for loop statement is terminated by symbol ___________

Show Answer
Ans. Semicolon(;)

Q3. What is the difference between break and continue statements?

Show AnswerAns. break statement terminates the loop as the condition matches. for example.

a=5

while a>0:

   a=a-1

   if a==3: #as this condition matches it terminates the loop

      break

   else:

      print(a)

Output : 4


Continue statement is used to skip a particular condition. for example

a=5

while a>0:

   a=a-1

   if a==3: #as this condition matches it goes to the next condition of the loop

      continue

   else:

      print(a)

Output : 
4
2
1
0

Q4. Convert the following loop into for loop :
x = 4
while(x<=8):
print(x*10)
x+=2

Show AnswerAns.
for x in range(4,9,2):
    print(x*10)

Q5. Write the output of the following:
for k in range(10,20,4):
print(k)

Show AnswerAns.

10
14
18

Q6. Find errors in the following code:
x = input(“Enter value”)
for k in range[0,20]
if x=k
print(x+k)
else:
Print(x-k)

Show AnswerAns

x = input("Enter value")

for k in range(0,20):

    if x==k:

       print(x+k)

    else:

       print(x-k)

Q7. Write the output of the following:

x=3
if x>2 or x<5 and x==6:
print(“Bye”)
else:
print(“Thankyou”)

Show Answer

Q8. Write the output of the following:

x,y=2,4
if(x+y==10):
print(“Thankyou”)
else:
print(“Bye”)

Show Answer

Q9. Write the output of the following:

x=10
y=1
while x>y:
x=x-4
y=y+3
print(x)

Show AnswerAns.

6
2

Q10. Write the output of the following:
for x in range(3):
for y in range(2):
print(“Practice Questions of loops in python”)
print()

Show AnswerAns.

Practice Questions of loops in python
Practice Questions of loops in python

Practice Questions of loops in python
Practice Questions of loops in python

Practice Questions of loops in python
Practice Questions of loops in python