Multiple choice

Find the wrong number in the following number series. 10080, 1680, 335, 84, 28, 14

  1. 10080

  2. 84

  3. 335

  4. 28

  5. 14
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Check the division pattern: 10080÷6=1680, 1680÷10=168 (not 335), 335÷5=67 (not 84). The pattern should be dividing by 6, 10, 5, 4, 3... However, 1680÷10=168, not 335. The number 335 breaks the divisibility pattern. If we had 1680÷5=336, then 336÷4=84, which would fit better. Thus 335 is the wrong number.

Keep practicing — related questions