Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 243 | 162 | 9 |
| 108 | 72 | 6 |
| 48 | ? | 4 |
(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. 32.
The logic used here is:
Row 1:
243 - 162 = 81
√81 = 9
Row 2:
108 - 72 = 36
√36 = 6
Row 3:
42 = 16
48 - x = 16
x = 32
Hence, option 3 is the correct answer.