Study the given pattern carefully and select the number that can replace the question mark (?) in it. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13-Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
(4, 2, 18)
(1, 7, 24)
(5, 4, ?)

Correct option is B

In this question following patter is followed-
(1^st + 2^nd) × 3 = 3^rd Number
4, 2, 18 → (4 + 2) × 3 = 6× 3 = 18
1, 7, 24 → (1 + 7) × 3 = 8 × 3 = 24
Similarly,
5, 4, ? → (5 + 4) × 3 = 9 × 3 = 27
Therefore, the correct answer is (b).