alleryGaps rise by one in 1, 2, 4, 7, 11, 16. What number should come after?
A23
B22
C24
D20
Answer & Solution
Correct answer: B. 22
The gaps are 1, 2, 3, 4, 5, so the next gap is 6 and 16 + 6 = 22.
Keep practising Number Series
Browse all Number Series questions for RRB NTPC, or explore more Reasoning topics.
Related questions
Squares of 3, 4, 5, 6 are 9, 16, 25, 36. What number is next?Odd gaps 3, 5, 7, 9 link 4, 7, 12, 19, 28. Which number comes next?Subtracting 1, 2, 3, 4 in turn from 20 gives 20, 19, 17, 14, 10. Next?Triangle dots run 1, 3, 6, 10, 15, 21, 28. How many are in the next?Spot the intruder among the numbers 1, 4, 9, 16, 20, 25.A prime is missing in the list 2, 3, 5, ?, 11, 13. Which one?What does the Fibonacci pattern give after the pair 8 and 13?Which square number is the sum of triangular numbers 6 and 10?