Q1. If the division N ÷ 2 leaves a remainder of 1, what might be the one’s digit of N? (N is odd; so its one’s digit is odd. Therefore, the one’s digit must be 1, 3, 5, 7 or 9.)
The detailed solution for the above-written question is as follows
N is odd; so it's unit digit is odd. Therefore, the unit digit must be 1, 3, 5, 7 or 9.