Question : Directions: In the following question a series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
43, 172, 86, 344, ?
Option 1: 172
Option 2: 258
Option 3: 129
Option 4: 430
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Correct Answer: 172
Solution :
Given:
43, 172, 86, 344, ?
In the given series, multiply by 4 and divide by 2 alternately to get the missing number.
So, 172 is the missing number in the given series. Hence, the first option is correct.
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