Fill the missing term in the sequence: 16, 4, 2, 1.5, ?, 1.875. The multiplier increases by 1/4 each step (×1/4, ×1/2, ×3/4, ×1, ×5/4).

Difficulty: Easy

Correct Answer: 1.5

Explanation:


Introduction / Context:
This series uses gradually increasing fractional multipliers, rising by 1/4 each time.



Given Data / Assumptions:

  • 16 → 4 → 2 → 1.5 → ? → 1.875
  • Multipliers suspected: 1/4, 1/2, 3/4, 1, 5/4.


Concept / Approach:
Verify each transition as a multiplication by the stated fractions.



Step-by-Step Solution:

16 × 1/4 = 44 × 1/2 = 22 × 3/4 = 1.51.5 × 1 = 1.5 → missing term1.5 × 5/4 = 1.875 ✔


Verification / Alternative check:
The fractional ladder 0.25, 0.5, 0.75, 1.0, 1.25 precisely fits all steps.



Why Other Options Are Wrong:
2 or 1.75 would break the uniform increment of 1/4 in the multipliers.



Common Pitfalls:
Confusing additive with multiplicative growth; here it is strictly multiplicative.



Final Answer:
1.5.

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