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How many two-digit positive integers are congruent to 1 (mod 7)?

 Oct 15, 2020
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15 , 22 , 29 , 36 , 43 , 50 , 57 , 64 , 71 , 78 , 85 , 92 , 99 , Total =  13 such numbers

 Oct 15, 2020

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