Question

Find the LCM of 20, 25, 35, and 40.

• A. 7000
• B. 1400
• C. 700
• D. 14000

Answer 1

The correct option is B

1400

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

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

LCM of 20, 25, 35, 40 = 5 $\times$ 2 $\times$ 2 $\times$ 1 $\times$ 5 $\times$ 7 $\times$ 2

$\therefore$ LCM of 20, 25, 35, 40 = 1400