The greatest number that exactly divides 324, 1044 and 1548 is:

Correct option is C

Given:
Numbers: 324, 1044, 1548
Solution:
Prime factorization of the given numbers:
324 = $$2^2 × 34$$​​
1044 = $$2^2 × 3^2 × 29$$​​
1548 = $$2^2 × 3^2 × 43$$​​
=> HCF =$$2^2 \times 3^2=$$​ 4 × 9 = 36