Program to calculate factorial of number n and find out permutation and combination using return type.

Problem Analysis:

The problem is to calculate the factorial of a given number and find out permutation and combination using the factorial calculated.

Code:

 

Outputs:

Enter a number(n) to calculate it’s factorial and r such n>r

5
2
5! = 120
ncr=10
npr=20

 

 

 

 

 

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