Without using a calculator, determine whether the first number is divisible by the second number.
-Is 85,104,901 divisible by 11?
A)Yes
B)No

Question

Quizplus · Accepted Answer

To determine if a number is divisible by 11, take the alternating sum of its digits. For 85,104,901, the alternating sum is 8 - 5 + 1 - 0 + 4 - 9 + 0 - 1 = -2, which is not divisible by 11. Therefore, 85,104,901 is not divisible by 11.

Without Using a Calculator, Determine Whether the First Number Is