Question

Which of these numbers are multiples of 18? Select all correct answers. (A) 35691 (B) 123456 (C) 654321 (D) 102030 (E) 235910

Answer 1

They all are incorrect

Explanation:

To find the multiples of a number, just divide!

for ex. 21 is the number you are asked to find the multiples for

A) 234567

B) 6757587

C) 56788901

D) 21

E) 2345678910

You have to divide each number by 21. If there is a positive (non-decimal) quotient, then that number is a multiple of 21. (Example; 21 divided by 21 is 1! 1 is a positive and non-decimal number. So, 21 is a multiple of 21)

These same rules can be used for 18 too.

35691 divided by 18 = 1982.83333333 (NOPE)

123456 divided by 18 = 6858.66666667 (NOPE)

654321 divided by 18 = 36351.1666667 (NOPE)

102030 divided by 18 = 5668.33333333 (NOPE)

235910 divided by 18= 13106.1111111 (NOPE)

So, all of them are incorrect

Answer 2

1,2,3,6,9,18

Explanation:

The multiples of 18 are 1,2,3,6,9,18 or 1*18, 2*9, and 3*6. 5 is not so that eliminates A,B,C and E But 0 or 10, 20, and 30 aren't either.