Multiple choice general knowledge math & puzzles

Find next number in the series 5200,5199,5195,5186,5170,5145,--

  1. 5109

  2. 5108

  3. 5107

  4. 5106
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Each term is obtained by: previous term × position - position^2. Starting from 5200: 5200×2-4=5196, 5196×3-9=5179, 5179×4-16=5170 (should be 5186), 5186×5-25=5145. Following this pattern: 5145×6-36=5109.

AI explanation

The differences between consecutive terms are -1, -4, -9, -16, -25 (perfect squares 1,4,9,16,25), so the next difference is -36, giving 5145 - 36 = 5109.

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