Number series – find the incorrect term: 2880, 480, 92, 24, 8, 4, 4

Difficulty: Medium

Correct Answer: 92

Explanation:


Introduction / Context:
Here the pattern is a clean sequence of successive divisions by descending integers. One term breaks this elegant structure.



Given Data / Assumptions:

  • Series: 2880, 480, 92, 24, 8, 4, 4
  • Exactly one term is wrong.
  • Look for a factorial-like cascade or division by 6, then 5, then 4, etc.


Concept / Approach:

Check the idea “divide by 6, 5, 4, 3, 2, 1”. Such a descending-divisor pattern is a standard test item.



Step-by-Step Solution:

2880 / 6 = 480 ✓480 / 5 = 96 (but the series shows 92) ✗96 / 4 = 24 ✓24 / 3 = 8 ✓8 / 2 = 4 ✓4 / 1 = 4 ✓


Verification / Alternative check:

If we replace 92 with 96, the “divide by 6,5,4,3,2,1” rule holds perfectly for every step.



Why Other Options Are Wrong:

480, 24, 8, 4 are completely consistent with the corrected chain of divisions.


Common Pitfalls:

Attempting to fit mixed add/subtract steps obscures the far simpler division pattern.


Final Answer:

92

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