Which letter set will come in place of question mark (?) in the following series?
LOK, PQP, VSV, DUC, ?

Direction: Select the related word from the given alternatives.

26 : 48 :: 82 :? 

If TREK = 8346 and FAMILY =209175 then REALITY will be 

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

Enough: Sufficiency :: Excess:?

Four pairs of letter-cluster have been given out of which three are alike in some manner, while one is different. Choose the odd one.

Direction: Select the odd word from the given alternatives.

( A ) Mansion
( B ) Lodge
( C ) Tent
( D ) Inn

If 25 @ 12 @4=296 and 15@6@3=87, then what is the value of 20@8@7=?