NCO- Cyber Olympiad 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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