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There are 21 people in a room. They have to form groups of 3
people each. How many combinations are possible? Write a C
program to print the same.
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Answer Posted / jagadeesh
#include<stdio.h>
long int fact(long int n);
void main()
{
long int p;
p=fact(21)/(fact(18)*fact(3));
printf("%ld",p);
}
long int fact(long int n)
{
if(n==0||n==1)
return 1;
else
return n*fact(n-1);
}
| Is This Answer Correct ? | 6 Yes | 0 No |
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