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.
17, 13, 11, 7, 5, ?
Option 1: 0
Option 2: 1
Option 3: 2
Option 4: 3
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Correct Answer: 1
Solution :
Given
:
17, 13, 11, 7, 5, ?
Subtract 4 and 2 alternately to get the next term of the series.
17 – 4 = 13; 13 – 2 = 11; 11 – 4 = 7; 7 – 2 = 5; 5 – 4 = 1
So, the missing number is 1. Hence, the second option is correct.
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