Question 45

Which number will replace the question mark (?) in the following series?
60, 64, 32, 36, 18, ?

Solution

It is an alternative series of (60,32,18) and (64,36,22).

$$60-32=2\times\ 14.$$

$$32-18=14.$$

Similarly, 

$$64-36=2\times\ 14.$$

$$36-22=14.$$

D is correct choice.


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