Question : Directions: In the following question, select the missing number from the given responses.
| 18 | 20 | 8 | ||||||
| 16 | 20 | 18 | 22 | 9 | ? |
Option 1: 6
Option 2: 7
Option 3: 10
Option 4: 11
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Correct Answer: 7
Solution : Given:
| 18 | 20 | 8 | ||||||
| 16 | 20 | 18 | 22 | 9 | ? |
The pattern followed is as follows –
In the first part; 16 + 20 = 36; 36 ÷ 2 = 18
In the second part; 18 + 22 = 40; 40 ÷ 2 = 20
In the third part; (9 + (?)) ÷ 2 = 8
⇒ 9 + (?) = 8 × 2
⇒ 9 + (?) = 16
⇒ (?) = 16 – 9 = 7
So, the missing number is 7. Hence, the second option is correct.
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