Number series (insert 66 after every two increasing terms) Sequence: 7 9 66 12 14 66 17 … Choose the next two numbers.
Verbal Reasoning
Number Series
Difficulty: Easy
Choose an option
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A19 66
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B66 19
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C19 22
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D20 66
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E66 20
Answer
Correct Answer: 19 66
Explanation
Introduction / Context:This type mixes a simple increasing run with a recurring fixed insertion. Spotting the repetition cycle is the primary task.
Given Data / Assumptions:
- Given sequence: 7, 9, 66, 12, 14, 66, 17, …
- Every two increasing integers are followed by the fixed value 66.
Concept / Approach:Group terms into triplets: two rising numbers (+2) then an inserted constant (66). Continue the cycle.
Step-by-Step Solution:
First block: 7, 9, 66.Second block: 12, 14, 66.Next block begins at 17, then 19, followed by 66.Therefore, the next two terms are 19 and 66.Verification / Alternative check:The “+2, +2, then 66” cycle repeats consistently across the series.
Why Other Options Are Wrong:
- 66 19 and 66 20: Wrong order; the constant follows the two increases.
- 19 22 / 20 66: Break the +2, +2, then 66 rhythm.
Common Pitfalls:Forgetting that 66 is a separator that appears after exactly two incremented terms.
Final Answer:19 66