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. 365, 364, 355, 330, 281, ?
Option 1: 280
Option 2: 200
Option 3: 180
Option 4: 120
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Correct Answer: 200
Solution : Given: 365, 364, 355, 330, 281, ?
Subtract the square of consecutive odd numbers from the previous term to get the next term of the series – 365 – 1 2 = 365 – 1 = 364; 364 – 3 2 = 364 – 9 = 355; 355 – 5 2 = 355 – 25 = 330; 330 – 7 2 = 330 – 49 = 281; 281 – 9 2 = 281 – 81 = 200
So, the missing number of the series is 200. Hence, the second option is correct.
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