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If n is a positive integer divisible by 7, and if n <70 , what is the greatest possible value of n?

A 63
Explaination
If you know one multiple of a number, you can find the other multiples by adding and subtracting that number. The number 70 is divisible by 7. The greatest multiple that is less than 70 will be 70 − 7 = 63.
B 49
C 56
D 69