Select the related word/letters/number from the given

Given set: 374, 635, 725

Select the option in which the letters share the same relationship as that shared by the given pair of letters. 

LV : PZ

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

Won : Korea :: Lira : ?

If G = 7 and CELLS = 51, then MUTUAL =

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

PAIR : KZRI :: MINT : ?

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 combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.

Arrange the following words in a meaningful order.

A. Crust

B. Mantle

C. Core

D. Atmosphere

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

(34, 40, 52)

If C = 3 and TIMES = 66, then MARKET =