Question : Directions: Find the missing number from the given responses.
| 7 | 3 | 10 |
| 3 | 4 | 7 |
| 2 | 7 | ? |
| 42 | 84 | 140 |
Option 1: 2
Option 2: 17
Option 3: 34
Option 4: 9
Answer (1)
15th Jan, 2024
Correct Answer: 2
Solution : Given:
| 7 | 3 | 10 |
| 3 | 4 | 7 |
| 2 | 7 | ? |
| 42 | 84 | 140 |
The pattern can be observed running vertically down in the columns.
Column 1:
7 × 3 × 2 = 42
Column 2:
3 × 4 × 7 = 84
Column 3:
10 × 7 × (?) = 140
⇒ 70 × (?) = 140
⇒ (?) = 140 ÷ 70
⇒ (?) = 2
So, 2 is the missing term in the series. Hence, the first option is correct.
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