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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 / jeeva kumar
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int i,n,a,b,c=1,d=1;
printf("Enter the tot no of people");
scanf("%d", &n);
printf("In how many they have to form group");
scanf("%d", &a);
b=a;
for(i=0;i<b;i++)
{
c*=n;
d*=a;
n--;
a--;
}
printf("%d",c/d);
getch();
}
| Is This Answer Correct ? | 7 Yes | 0 No |
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