Multiple choice

Find the missing term in the following number series. 200 209 237 302 ?

  1. 425

  2. 399

  3. 485

  4. 428

  5. 416

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

The differences are: 209 - 200 = 9 = 3², 237 - 209 = 28 = 3³ + 1, 302 - 237 = 65 = 4³ + 1. The next difference should be 5³ + 1 = 126. So 302 + 126 = 428.