Question 1

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

Solution

From the given terms,

13 : 171 is related as $$13^2+2=171$$

8: 66 is related as $$8^2+2=66$$

7: 51 is related as $$7^2+2=51$$

10 : 98 is related as $$10^2-2=98$$

Hence, option D is different from the rest of the terms.


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