Civil Services Examination · प्रश्न 46
If n is a natural number, then what is the number of distinct remainders of (1^n + 2^n) when divided by 4?
उत्तर देखें और व्याख्या
उत्तर: (C) 2
व्याख्या
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.)