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SSC CPO 2019 PYQ — Question 171

SSC CPO Tier I - 12th December 2019 - Shift 2 • Reasoning • Q171

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Naveen, Sapna, Alka, Jenny, Megan, Farhad, and Bhavna are sitting in a row in a cinema hall. All of them are facing the screen that is towards the east. Sapna is at the extreme end and her immediate neighbor is Megan. Jenny is on the right of Megan. Bhavna has Megan and Farhad on each side. Alka is to the immediate right of Jenny who is sitting third from the south end.

In the following number series, two numbers have been put within brackets. Select the most appropriate option for these numbers in relation to their inclusion in the series.
0,7, 26, (65), 124, 215, (344), 511

Show answer & explanation

Correct answer: C

Explanation

The correct option is option 3 i.e Both the bracketed numbers are incorrect.

Understanding
  • The series is 0,7, 26, (65), 124, 215, (344), 511
  • Here, the pattern follows is, 13 - 1, 23 - 1, 33 - 1, (43 - 1) ≠ 65, 53 - 1, 63 - 1, (73 - 1) ≠ 344 , 83 - 1
  • So, both the bracketed numbers are incorrect.
  • Hence, the correct answer is option 3.