Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 6 | 4 | 100 |
| 7 | 5 | 144 |
| 9 | ? | 169 |
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e 4.
| Understanding | Application |
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In every row, (1st column + 2nd column)2 = 3rd column 1st row: (6 + 4)2 = 102 = 100 2nd row: (7 + 5)2 = 122 = 144 |
Similarly for 3rd row: (9 + x)2 = 169 ⇒ (9 + x)2 = 132 ⇒ 9 + x = 13 ⇒ x = 4 Hence, 4 is the correct answer. |