The largest 4 - digit number exactly divisible by each of 12, 15, 18 and 27 is?

Explanation:-

LCM of (12, 15, 18, 27)
⇒ 4 × 3 × 5 × 3 × 3 = 540
largest 4 - digits number = 9999 on dividing by 540 to number = ⁹⁹⁹⁹/₅₄₀
remainder = 279
Required number = 9999 - 279 = 9720