NCO- Cyber Olympiad (SOF) Class 5: Questions 1 of 633

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» Verbal Reasoning » Series Completion

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Question

What are the next four numbers in the given sequence?

7,10,8, 11,9, 12, ________ ________ ________ ________

Choices

Choice (4) Response

a.

10,13,11,14

b.

13,18,15,20

c.

15,20,17,22

d.

21,18,23,20

Topic iScore

Ques. Time

Answer

a.

Explanation

  • Here given series 7,10,8, 11,9, 12
  • It means 7 + 3 =10 and 10 – 2 = 8
  • 8 + 3 = 11 and 11 - 2 = 9
  • 9 + 3 =12 and 12 - 2 = 10
  • 10 + 3 =13 and 13 - 2 = 11
  • 11 + 3 = 14
  • So, here one time 3 added then 2 subtract so this apply alternately and sequence is 7,10,8, 11,9, 12,10,13,11, and 14.
  • Alternatively we can pick alternate numbers like 7,8, 9 (increasing order of 1) and 10,11,12 (increasing order of 1 again).
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