Study the given pattern carefully and select the number that can replace the question mark (?) in it.
First row – 13, 50, 104
Second row – 11, 42, ?
Third row – 18, 70, 144
(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/deleting/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. 88
The given pattern is:
First row – 13, 50, 104
Second row – 11, 42, ?
Third row – 18, 70, 144
The logic used here is:
(13 x 4) - 2 = 50; (50 x 2) + 4 = 104
(18 x 4) - 2 = 70; (70 x 2) + 4 = 144
So, (11 x 4) - 2 = 42; (42 x 2) + 4 = 88
Hence, 88 is the correct answer.