Question

What is the LCM of the numbers 12, 16, 18, 21 and 28?

• A. 1008
• B. 1012
• C. 1022
• D. 1010

Answer 1

The correct option is A

1008

The least or smallest common multiple of any two or more numbers is termed as LCM.

The LCM of the given numbers can be found as follows:

LCM = $2\times 7\times 3\times 2\times 1\times 4\times 3\times 1\times 1$

$\therefore$ LCM of 12, 16, 18, 21 and 28 = 1008