What should come next in the following number series? 9 7 5 3 1 8 6 4 2 9 7 5…
2024
What should come next in the following number series?
9 7 5 3 1 8 6 4 2 9 7 5 3 8 6 4 2
- A.
2
- B.
1
- C.
5
- D.
3
Attempted by 22 students.
Show answer & explanation
Correct answer: B
Solution: Identify the repeating rule and continue it.
Key idea: Start at 9 and repeatedly subtract 2, wrapping through the digits 1–9. Doing this produces a fixed 9-term cycle:
9, 7, 5, 3, 1, 8, 6, 4, 2
The sequence given in the question is successive terms from this repeating cycle. To continue the pattern after the final shown 2, move to the next term of the cycle, which is 1.
Answer: 1