0
an=an-1
To use this formula, you start of with a value on the first term, but theoretical, it'd turn out like this:
a1=a1-1=a0
a2=a2-1=a1
a3=a3-1=a2
a4=a4-1=a3
a5=a5-1=a4
Where a0 would be your starting term (this formula is based on the previous term, and that's why you must have a value to start off with).
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Codings for coprime number in c?
#include<stdio.h> int main(){ int n1,n2; printf("\nEnter two numbers:"); scanf("%d %d",&n1,&n2); while(n1!=n2){ if(n1>=n2) n1=n1-n2; else n2=n2-n1; } printf("\nGCD=%d",n1); return 0; }
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