Question 39

Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
39 : 72 :: 217 : 428 :: 135 : ?

Solution

39 ==> $$39\times2-6$$ = 78-6 = 72

217 ==> $$217\times2-6$$ = 434-6 = 428

135 ==> $$135\times2-6$$ = 270-6 = 264

Hence 264 will come in place of the question mark.

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