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Just for fun  i found this question in a puzzle book  explain why numbers of the form ABABAB where A and B are positive whole numbers are divisible by 7.
 one year ago
 one year ago
Just for fun  i found this question in a puzzle book  explain why numbers of the form ABABAB where A and B are positive whole numbers are divisible by 7.
 one year ago
 one year ago

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UnkleRhaukusBest ResponseYou've already chosen the best response.0
are A and B digets in a single number, or are they terms in a product?
 one year ago

cwrw238Best ResponseYou've already chosen the best response.0
its because 10101 is a factor of all these numbers (e.g. 484848) and 10101 is a multiple of 7
 one year ago
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