Multiple choice

In the following number series, one term does not fit into the series. Find the wrong term. 841, 529, 361, 289, 160, 121

  1. 361

  2. 289

  3. 160

  4. 121
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C Correct answer
Explanation

The series consists of squares of prime numbers in descending order: 29^2=841, 23^2=529, 19^2=361, 17^2=289, 13^2=169, 11^2=121. The term 160 is incorrect as it should be 169.

AI explanation

The terms in the series are based on the squares of consecutive prime numbers. The numbers are the squares of 29, 23, 19, 17, 13, and 11, which are 841, 529, 361, 289, 169, and 121 respectively. The term 160 is incorrect because it should be 169.

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