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Find the remainder when 1*2+2*3+3*4+....+99*100 is divided by 101

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Ans is ===0 (remainder) solution: i am software programmer i create a code to find 1*2+2*3+........99*100=333300/101=3300 remainder==0; the program is: package coma; public class frac { public static void main(String args[]){ int a=1,sum=0; for(int i=0;i