Multiple choice

In the following number series, a wrong number is given. Find out that wrong number. $8 4 4 6 12 36$

  1. $4$
  2. $6$
  3. $8$
  4. $12$
  5. $36$
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The pattern alternates operations: even positions multiply by 1, 1.5, 2 (increasing by 0.5), odd positions divide by 2 then subtract position number. Position 1 (odd): 8÷2-1=3 (but 4 given). Position 2 (even): 4×1=4 ✓. Position 3 (odd): 4÷2-2=0 (but 6 given). Position 4 (even): 6×1.5=9 (but 12 given). Position 5 (odd): 12÷2-3=3 (but 36 given). Another pattern: n÷2-(position) for odd positions, n×(1, 1.5, 2) for even positions. Neither pattern consistently fits. The answer claims 36 is wrong.