Question : Directions: In the following question a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 2, 4, 7, ?, 16
Option 1: 14
Option 2: 8
Option 3: 11
Option 4: 15
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Correct Answer: 11
Solution :
Given:
1, 2, 4, 7, ?, 16
Add consecutive natural numbers to the previous number to obtain the missing number.
1 + 1 = 2; 2 + 2 = 4; 4 + 3 = 7; 7 + 4 = 11; 11 + 5 = 16
So, the missing number in the series is 11. Hence, the third option is correct.
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