Use divisibility tests to decide whether the first number is divisible by the second.
-6,955,200; 7 [Note that a divisibility test for 7 is as follows:
Double the last digit of the number and subtract this value from the original number with the last
Digit omitted. Repeat this process as many times as necessary until the number obtained can easily
Be divided by 7. If the final number obtained is divisible by 7, then so is the original number. If the
Final number obtained is not divisible by 7, then neither is the original number.]
A)Yes
B)No

Question

Quizplus · Accepted Answer

To check if 6,955,200 is divisible by 7, we apply the divisibility rule for 7:  1. Double the last digit (0) and subtract from the rest of the number: 695,520 - 0 = 695,520.  2. Repeat: Double the last digit (0) and subtract: 69,552 - 0 = 69,552.  3. Repeat: Double the last digit (2) and subtract: 6,955 - 4 = 6,951.  4. Repeat: Double the last digit (1) and subtract: 695 - 2 = 693.  5. 693 is divisible by 7 (693 ÷ 7 = 99), so 6,955,200 is divisible by 7.

Use Divisibility Tests to Decide Whether the First Number Is