If n is a positive integer divisible by 7, and if n < 70, what is the greatest possible value of n?
Explanation
The correct answer is 63. 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.