Study the given pattern carefully and select the number that can replace the question mark (?) in it.
First row- 5, 6, 19
Second row- 7, 7, 35
Third row- 8, 9, ?
(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: D
Explanation
The correct answer is option 4 i.e. 55
| 5 | 6 | 19 |
| 7 | 7 | 35 |
| 8 | 9 |
? |
Logic used here is:
(5 x 6) - (5 + 6) = 19
(7 x 7) - (7 + 7) = 35
Similarly, (8 x 9) - (8 + 9) = 55
Hence, option 4 is the correct option.