Question

A number is divisible by both 4 and 7. By what other number will it be
always divisible. Give reason.
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Answer 1

5 and 12 are co-primes and we know that if a number is divisble by two co-primes, then it is a known fact that it is also divisible by their product.

The product of 5 and 12 is 60. Hence, the number is always divisible by 60.

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Answer 2

28, because it is divisible by both 4 and 7 .So,it is 28