disit number formed by repeating a two digit number is alwaye exactly – InterviewSolution

1.	disit number formed by repeating a two digit number is alwaye exactly divisible6
Answer» let the unit digit be X and tenth digit be Yso,Four digit number: 1000y + 100x + 10y + x 1010y + 101x 101(10y + x)so that number must be divisible by 101 and also 101 is the smallest three digit prime number.

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