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	`1`	`+#include <stdio.h>`
	`2`	`+int factorial(int n)`
	`3`	`+{`
	`4`	`+ int f;`
	`5`	`+ for(f=1;n>1;n--)`
	`6`	`+ f=f*n;`
	`7`	`+ return f;`
	`8`	`+}`
	`9`	`+int npr(int n,int r)`
	`10`	`+{`
	`11`	`+ return factorial(n)/factorial(n-r);`
	`12`	`+}`
	`13`	`+int ncr(int n,int r)`
	`14`	`+{`
	`15`	`+ return npr(n,r)/factorial(r);`
	`16`	`+}`
	`17`	`+int main()`
	`18`	`+{`
	`19`	`+ int n,r;`
	`20`	`+`
	`21`	`+ printf("Enter the value of n: ");`
	`22`	`+ scanf("%d",&n);`
	`23`	`+ printf("Enter the value of r: ");`
	`24`	`+ scanf("%d",&r);`
	`25`	`+ printf("\nPermutation of %dP%d = %d\n",n,r,npr(n,r));`
	`26`	`+ printf("Combination of %dC%d = %d\n",n,r,ncr(n,r));`
	`27`	`+}`

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