Question

what is divisibility rule of 28

Answer 1

the divisibility rule of 28 is that it should be divisible by 7 and 4.

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Answer 2

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Hey user !!

Here's your answer !!

The divisibility rule of 28 can be learnt but instead know the reason. Since the prime factorisation of 28 gives 7 and 4, the divisibility rule is as follows:

" If a number is divisible by both 4 and 7 it is divisible by 28 ".

Similarly other numbers such as 6 and 15 also can be derived using this method of prime factorisation.

Hope this helps !!

Cheers !!
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# Kalpesh :)