Which one of the following numbers is a multiple of 8?
(a) 923872    (b) 923972    (c) 923862    (d) 923962

Solution:

The question is based on divisibility rules of 8.

A divisibility rule is a kind of shortcut to figuring out if a given integer is divisible by a divisor, without performing the whole division process but by examining its digits.

923872 is divisible by 8 as the last 3 digits 872 is exactly divisible by 8.

The last 3 digits of other numbers:

• 923972: 972 not divisible by 8
• 923862: 862 not divisible by 8
• 923962: 962 not divisible by 8

923872 is divisible by 8

Thus, 923872 is a multiple of 8.

Which one of the following numbers is a multiple of 8?

Summary:

Option (a) 923872, is the multiple of 8 out of all the numbers given.