Answer:
Divisibility by 7 — A number of the form 10x + y is divisible by 7 if and only if x − 2y ... 112 -> 11 − (2×2) = 11 − 4 = 7 YES 98 -> 9 − (8×2) = 9 ...
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Answer:
Divisibility by 7 — A number of the form 10x + y is divisible by 7 if and only if x − 2y ... 112 -> 11 − (2×2) = 11 − 4 = 7 YES 98 -> 9 − (8×2) = 9 ...