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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.
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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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