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GATE 2014 CS (CS3) – Question 4

General Aptitude · Quantitative Aptitude: Arithmetic and Number Computation · 1 mark · Multiple choice

Which number does not belong in the series 2, 5, 10, 17, 26, 37, 50, 64?

  1. 17
  2. 37
  3. 64
  4. 26

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Show answer and explanation

Correct answer: (C) 64

Explanation

The terms follow n²+1:2,5,10,17,26,37,50,65 for n=1through8. The printed final64should therefore be65. Hence **64,C**, does not belong. The consecutive expected differences are3,5,7,9,11,13,15.