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Divisible by 19? (Posted on 2016-07-15) Difficulty: 3 of 5
Devise a feasible divisibility test for 19.

No Solution Yet Submitted by Ady TZIDON    
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Divide the number for twenty, sum the quotient and the remainder and see if it is multiple of 19

Ex 665
665/20 =33   (+5)
33+5=38=19*2
So 665 is multiple of 19



  Posted by armando on 2016-07-15 12:36:40
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