Multiple choice

Choose the correct alternative from given ones that will complete the series. 10, 100, 200, 310, ?

  1. 400

  2. 410

  3. 420

  4. 430

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

The differences between consecutive terms are: 100-10=90, 200-100=100, 310-200=110. The differences are increasing by 10 each time (90, 100, 110). The next difference should be 120, so 310+120=430 (option D). Alternatively, these could be adding prime numbers or following a different pattern, but the constant difference increase of 10 is the clearest pattern.