Question : Directions: Select the missing number from the given responses.
| 134 | 34 | 100 |
| 117 | 86 | 31 |
| 87 | ? | 64 |
Option 1: 120
Option 2: 23
Option 3: 55
Option 4: 30
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Correct Answer: 23
Solution : Given:
| 134 | 34 | 100 |
| 117 | 86 | 31 |
| 87 | ? | 64 |
In each row, the third number is the difference between the first two.
Row 1:
134 – 34 = 100
Row 2:
117 – 86 = 31
Row 3:
87 – (?) = 64
⇒ (?) = 87 – 64
⇒ (?) = 23
So, 23 is the missing number. Hence, the second option is correct.
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