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Mathematics 5 Online
OpenStudy (cwrw238):

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.

OpenStudy (anonymous):

because 6/7=1.

OpenStudy (unklerhaukus):

are A and B digets in a single number, or are they terms in a product?

OpenStudy (cwrw238):

its because 10101 is a factor of all these numbers (e.g. 484848) and 10101 is a multiple of 7

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