Multiple choice

Directions: Find the wrong number in the following number series: 24, 120, 335, 720, 1320, 2184

  1. 120

  2. 335

  3. 720

  4. 1320

  5. 2184

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Series: 24, 120, 335, 720, 1320, 2184. 24 = 3^3 - 3, 120 = 5^3 - 5, 335 (should be 343-7=336), 720 = 9^3 - 9, 1320 = 11^3 - 11, 2184 = 13^3 - 13. The wrong number is 335.