Multiple choice general knowledge math & puzzles

5, 20 80, 320, 1280, …..

  1. 4600

  2. 6400

  3. 7200

  4. 5120
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern multiplies each term by 4: 5 × 4 = 20, 20 × 4 = 80, 80 × 4 = 320, 320 × 4 = 1280, so 1280 × 4 = 5120. This is a geometric progression with common ratio 4. Options A, B, C are incorrect calculations.

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