Find the LCM of 20, 120 and 60.

Correct option is D

Given:

The numbers are 20, 120, and 60.

Solution:

Find the prime factorization of each number:

20 = $$2^2 \times 5$$​​

120 = $$2^3 \times 3 \times 5$$​​

60 = $$2^2 \times 3 \times 5$$​​

Multiply the highest powers of all primes:

LCM = $$2^3 \times 3^1 \times 5^1 = 8 \times 3 \times 5$$ = 120