Study the given pattern carefully and select the number that can replace the question
mark (?) in it.
First row: 18, 9, 27
Second row: 40, 36, 140
Third row: 40, 13,?
(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: C
Explanation
The correct answer is option 3 i.e. 25.
The logic used here is:
Row 1: 9 × 5 = 45; 45 - 18 = 27
Row 2: 36 × 5 = 180; 180 - 40 = 140
Row 3: 13 × 5 = 65; 65 - 40 = 25