Which of these is a merit of commodity approach

If 58 # 67 = 82 and 24 # 55 = 33, then 72 # 84 = ?

Select the related alternative from the given:

Spring: Summer :: _______.

Select the word-pair that best represents a similar relationship to the one expressed in the given pair of words.

If 49 × 45 = 45, 45 × 69 = 35 and 67 × 78 = 57, then 39 × 43 = ?

If 66 @ 26 = 15' and 44 @ 6 = 12', then 56 @ 12 = ?'. What will come in place of question mark? 

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.

RT : QU : : VX : ?

According to the logic used in the first pair, replace the question mark with the appropriate option given to

Cytology : Cells :: Entomology : ??