Question 18

Three of the following four number-pairs are alike in a certain way and oneis different. Pick the number-pair that is different from the rest.

Solution

As per the given option, we can see that,

7 is related to 48 as $$7^2-1=48$$

11 is related 120 as $$11^2-1=120$$

5 is related 24 as $$5^2-1=24$$

But option B is different , it is not following the pattern.

$$13^2+1=170$$

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