Python3 exercise with solutions (Set 2)

 Problem 1:

To print n odd numbers.

Solution

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

i=0

for i in range(n+1):

    if(i%2!=0):

        print (i)

Output

Enter number:7

1

3

5

7

Problem 2:

To find the sum of digits of the given number.

Solution

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

sum=0

while(n>0):

    d=n%10

    n=n//10

    sum=sum+d

    print (sum)

Output

Enter number:345

12

Problem 3:

To print the given pattern.

1

1 3

1 3 5

1 3 5 7

Solution

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

i=0

j=0

for i in range (0,n+1):

   for j in range (0,i+1):

       k=(2*j)+1

       print (k)

   print ("/n")

Output

Enter number:4

1

1 3

1 3 5

1 3 5 7

Problem 4:

To check whether the given number is an amstrong number or not.(eg.153=(1*1*1)+(5*5*5)+(3*3*3)=153

Solution

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

sum=0

x=n

while (n>0):

   d=n%10

   n=n//10

   cube=d*d*d

   sum=sum+cube

   print (sum)

   if(x==sum):

       print ("Amstrong number")

   else:

       print ("Not an amstrong number")

Output

Enter number:153

27

152

153

Amstrong number

Problem 5:

To print the given pattern.

1

1 2

1 2 3

1 2 3 4

Solution

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

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

    for j in range (1,i+1):

        print (j)

    print ("/n")

Output

Enter number:4

1

1 2

1 2 3

1 2 3 4

Problem 6:

To print Fibonacci series.

Solution

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

i=0

j=1

print (0)

print (1)

for s in range (n)

   s=i+j

   print (s)

   i=j

   j=s

Output

Enter number:10

0

1

1

2

3

5

8

Problem 6:

To find whether the given number is prime or composite.

Solution

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

i=2

k=n%i

for i in range (n):

   x=k

if(x==0):

   print ("composite")

else:

   print ("prime")

Output

Enter number:8

composite

Problem 7:

To print the given pattern.

1

1 0

1 0 1

1 0 1 0

1 0 1 0 1

Solution

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

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

   for j in range (1,i+1):

      if(j%2==0):

          print(0)

      else:

          print (1)

Output

Enter number:5

1

1 0

1 0 1

1 0 1 0 

1 0 1 0 1