Four number have been given out of which three are alike in a certain way and one is different. Select the number pair that is different from the rest.

Four number have been given out of which three are alike in a certain way and one is different. Select the number pair that is different from the rest. Correct Answer 161

The pattern followed is:

Prime Number- A number divisible only by ‘1’ and ‘itself ‘.

131, 29 and 83 are prime numbers whereas 161 is not a prime number.

161 = 7 × 23

Hence, ‘161’ is the different number.

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