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, 5, 26, ?

Option 1: 677

Option 2: 252

Option 3: 526

Option 4: 125


Team Careers360 16th Jan, 2024
Answer (1)
Team Careers360 24th Jan, 2024

Correct Answer: 677


Solution : Given:
1, 2, 5, 26, ?

Add 1 to the square of each previous term to obtain the next term in the series.
1 2 + 1 = 2; 2 2 + 1 = 5; 5 2 + 1 = 26; 26 2 + 1 = 677

So, 677 is the missing term in the series. Hence, the first option is correct.

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