Multiple choice

In the following number series only one number is wrong. Find out the wrong number. 27 223 618 1203 1987

  1. 27

  2. 223

  3. 618

  4. 1203

  5. 1987
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pattern appears to be: 27 + 196 = 223, 223 + 395 = 618, 618 + 585 = 1203, 1203 + 784 = 1987. Looking deeper: 27 = 3^3, then adding terms that increase systematically. Alternatively: 27 × 8 + 7 = 223, 223 × 3 - 51 = 618. The pattern breaks at 618. The series likely follows a different consistent rule that 618 violates. Marked as the wrong number in the sequence.

Keep practicing — related questions