Consider the following pairs:

Which of the pairs given above are correctly matched?

Select the option in which the numbers are related in the same way as are the numbers in the given set.

(108, 115, 136)

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

Select the option in which the numbers are related in the same way as are the numbers in the given set.

(28, 343, 21)

Select the word pair in which the two words are related in the same way as the two words in the following word-pair.  

Six : Hexagon

Select the option that is related to the third term in the same way as the second term is related to the first term.

CROW : DLIX :: MOST : ?

If 32 @ 10 = 32 and 42 @ 30 = 76, then 28 @ 56 = '?'.

Select the related number from the given alternatives.

82: 160 :: 36: ?

Three of the following letter-clusters are alike in some manner and hence form a group. Which letter-cluster does not belong to that group?