Multiple choice

Find the wrong number in the following number series. 9, 17, 50, 99, 298, 591, 1772

  1. 99

  2. 17

  3. 591

  4. 298

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pattern: ×2+1, ×3-1, ×2-2 alternating. 9×2+1=19 (but series has 17), 17×3-1=50, 50×2-1=99, 99×3-1=296 (but series has 298), 298×2-1=595 (but series has 591). Multiple errors exist, but 298 is the first deviation from the pattern.

Keep practicing — related questions