Q3. Suppose that the division N\div 5 leaves a remainder of 4, and the division N\div 2 leaves a remainder of 1. What must be the one’s digit of N?

Answers (1)

Since N leaves the remainder of 4 when divided by 5. the possible values in ones place of number N are 4 or 9.

now, since it leaves a remainder of 1 when divided by 2, the N would be an odd number. hence ones digit of N is also an odd number. which means ones digit of our number N is 9.

 

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