Divisibility test of any number by 12 || Time saving trick

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Title : Divisibility test of any number by 12
In this video clip viewers will learn the shortest ever trick on checking the divisibility test of any number by 12.
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135, 792 is a multiple of 12 because 1 + 3 + 5 + 7 + 9 + 2 = 27, which means it's a multiple of 3, and ends in 92, which means it's a multiple of 4

matiaspereira
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Why should we check for 3 and 4 instead 6 and 2?

lingavignesh