Multiple choice

In the following number series only one number is missing. Find out the missing number. 7 8 18 57 ?

  1. 232

  2. 102

  3. 524

  4. 164

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

The pattern is: 7 × 1 + 1 = 8, 8 × 2 + 2 = 18, 18 × 3 + 3 = 57. Following this pattern: 57 × 4 + 4 = 228 + 4 = 232. Each term is obtained by multiplying the previous term by its position (1st, 2nd, 3rd, etc.) and adding that position number.

Keep practicing — related questions