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I am a 2 digit number. the digit is tens place and the digit in unit place are consecutive prime numbers.the sum of digits is multiple of 3 and 4.


sumitcv10 29th Dec, 2020
Answer (1)
Ronak Gala Student Expert 29th Dec, 2020

The number must be 57. It satisfies both the conditions as well. The digit at tens place that is 5 and the digit and units place ie 7 both are consecutive prime numbers and their sum 5+7 = 12 have 3 and 4 both as its factors. Means 12 is the multiple of both 3 and 4. So 57 must be the answer.

Thank you.

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