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17 is a cyclic number – its digits always appear in the same order but will rotate around when multiplied by any number from 1 to 6:
17 x 1 = 17
17 x 2 = 285714
17 x 3 = 71
17 x 4 = 571428
17 x 5 = 71
17 x 6 = 857142
Pretty cool, huh?
Now multiply 17 by 7.
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