Multiple choice

In the following number series, only one number is wrong. Find out the wrong number. 17, 18, 35, 53, 90, 141, 229, 370

  1. 90

  2. 35

  3. 141

  4. 53

  5. 370
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A Correct answer
Explanation

The series follows a pattern where each term is the sum of the previous two: 17+18=35, 18+35=53, 35+53=88 (not 90), 53+88=141, 88+141=229, 141+229=370. The number 90 is incorrect; it should be 88.

AI explanation

The series follows a Fibonacci-type addition pattern where each term is the sum of the previous two terms. Checking the numbers, 17 + 18 = 35 and 18 + 35 = 53, so the next term should be 35 + 53 = 88. Since 90 appears in the sequence instead of 88, it is the wrong number.

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