Civil Services Examination · প্রশ্ন 46
If n is a natural number, then what is the number of distinct remainders of (1^n + 2^n) when divided by 4?
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (C) 2
ব্যাখ্যা
n = 1: 3 leaves remainder 3. n ≥ 2: 2^n is divisible by 4, so the remainder is 1. Two distinct remainders. (Answer as per the official UPSC answer key.)