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7623 is divisible by 3.

Test of divisibility by 3:

Sum of digits of 7623 = 7+6+2+3 = 18, which is a multiple of 3, so the number is divisible by 3.

If sum of the digits of a number is a multiple of 9 then it is divisible by 9.

So, 7623 is also divisible by 9.

Therefore, test of divisibility can help a lot in determining whether a number is divisible by any other number.

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2011-03-24 07:24:24
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