An easy way of finding out if the given number is divisible by number 3, 6 or 9

Add all the digits of the given number is the result of the addition is a muliple of 3, 6 or 9 then the given number is divisible by 3, 6 or 9

For example : 7734 the digits add to 7 + 7 + 3 + 4 = 21. Since 21 is divisible by 3 the, 7734 is divisible by 3.

Please note the number is not divisible by 3 but not by 6 or 9, this brings us to useful rule,

If by above rule the addition of digits result to 9 the same is divisble by 3 as well but same not be true as vice-versa.

5571 – The digits adds to 5 +5 + 7 + 1 = 18, since 18 is multiple of both 3 or 9, so 5571 is divisible by both 3 or 9

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## Quiz-How to divide easily by 3,6 or 9

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