Find the LCM of 12, 40, 50 and 78.

Correct option is A

Given:

We need to find the Least Common Multiple (LCM) of 12, 40, 50, and 78.

Solution:

Prime factorizations:

12 = $$2^2 \times 3$$​​

40 = $$2^3 \times 5$$​​

50 = $$2 \times 5^2$$​​

78 = $$2 \times 3 \times 13$$​​

LCM = $$2^3 \times 3 \times 5^2 \times 13$$​​

​$$= 8 \times 3 \times 25 \times 13$$​​

= 7800