Correct Answer - Option 2 : 3
Concept:
To make a perfect cube, the number should have triplets of same numbers.
Calculation:
Prime factors of 1944 = 3 × 3 × 6 × 6 × 6
∴ 3 should be multiplied with 1944 to make it a perfect cube.
⇒ 3 × 1944 = 5832
⇒ 3√ 5832 = 18
