NCO- Cyber Olympiad (SOF) Class 5: Questions 1 of 634

Question MCQ▾

What are the next four numbers in the given sequence?

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

Choices

Choice (4)Response

a.

13, 18,15, 20

b.

10, 13,11, 14

c.

21, 18,23, 20

d.

15, 20,17, 22

Edit

Answer

b.

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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