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 their 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)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 23.
The logic used here is: (First term - second term) × 8 + second term = Third term
Row 1 = (15 - 11) × 8 + 11 = 43
Similarly,
Row 3 = (9 - 7) × 8 + 7 = ? ⇒ ? = 23