Multiple choice

In the following number series only one number is wrong. Find out the wrong number. 73 375 1510 4540 9100

  1. 73

  2. 375

  3. 1510

  4. 4540

  5. 9100
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Analyze the pattern: 73 × 5 + 10 = 375, 375 × 4 + 10 = 1510, 1510 × 3 + 10 = 4540, 4540 × 2 + 10 = 9090 (should be 9100). The pattern is multiply by decreasing integers (5, 4, 3, 2) and add 10 each time. The last term should be 4540 × 2 + 10 = 9090, not 9100. Therefore, 9100 is the wrong number that breaks the established pattern.

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