Question

Let x be a natural number . When 5 divide by x,leaves remainder 3.what can be one's digit!
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Answer 1

ones digit might be = 3 and 8 because we know that if a digit is divisible by 5 then its unit place can have only 0 and 5. so , as for example = 13/5 leaves remainder 3 and 18/5 also leaves remainder 3

so we have to minus 0 and 5 with a digit which gives 3

same for 1) answer is 1 and 6 because we know that if a digit is divisible by 5 then its unit place can have only 0 and 5.

same for 4) answer is 4 and 9,because we know that if a digit is divisible by 5 then its unit place can have only 0 and 5