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 |
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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