Question 22 (Group Theory)

Let $H$ and $K$ are subgroups of $\mathbb{Z}_{144}$, if order of $H$ is 24 and order of $K$ is 36, then order of the subgroup $H\cap K$ is-

(a) 3

(b) 4

(c) 6

(d) 12

Explanation: (d) is correct.