Question : Directions: In the following question, select the number which can be placed at the sign of the question mark (?) from the given alternatives.
| 5 | 1 | 3 | 7 |
| 6 | 2 | 4 | 4 |
| 1 | ? | 2 | 7 |
Option 1: 3
Option 2: 4
Option 3: 5
Option 4: 6
Correct Answer: 6
Solution : Here, the sum of the numbers of the first and second rows is 16, so it should also be the same in the third row.
In the row one: 5 + 1 + 3 + 7 = 16
In the row two: 6 + 2 + 4 + 4 = 16
Similarly, in row three, all the numbers should add up to 16.
Therefore, 16 – (1 + 2 + 7) = 6
So, 6 is the required missing number. Hence, the fourth option is correct.
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