Question : Directions: In the following question, select the number that can be placed at the sign of the question mark (?) from the given alternatives.
| 2 | 5 | 4 |
| 3 | 4 | 3 |
| 7 | 6 | 2 |
| 15 | 18 | ? |
Option 1: 10
Option 2: 11
Option 3: 12
Option 4: 13
Correct Answer: 12
Solution : The sum of the first three rows is added to three to get the fourth row.|
Like, in the first column→(2 + 3 + 7) + 3 = 15
And, in the second column→(5 + 4 + 6) + 3 = 18
Similarly, in the third column→(4 + 3 + 2) + 3 = 12
So, the missing number is 12. Hence, the third option is correct.
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