What value should come in the place of (?) in the

Select the option in which the numbers are not related in the same way as are the number of the following set.

(54, 23, 26)  

If 24 @ 6 = 28 and 39 @ 24 = 102, then 22 @ 16 = '?'.

Select the letter cluster from among the given options that can replace the question mark (?) in the following series.

WGM, ZLT, CQA, ?, IAO, LFV

Select the option in which the numbers are related in the same way as are the number of the following set.

(93, 27, 3)

Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

Select the option that is related to the third number in the same way as the second number is related to the  f irst number.

In the following question, select the related number from the given alternatives.

72 : 11 :: 65: ?