Multiple choice general knowledge math & puzzles

Find out the wrong number in sequence 2807,1400,697,347,171,84,41,20

  1. 697

  2. 347

  3. 171

  4. 41
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pattern is (x - 7) / 2. (2807-7)/2=1400; (1400-6)/2=697; (697-3)/2=347. Wait, the standard pattern is (x-1)/2: (2807-7)/2=1400; (1400-6)/2=697; (697-5)/2=346. 347 is the first break in the consistent subtraction-division logic.

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