248 : 3 : : 328 : ?

Direction: Select the related word from the given alternatives.

Dog : Bark ::

Bow is to Violin as Plectrum is to 

Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E. g. 13 – Operations on 13 such as adding / subtracting / multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

(18, 39, 60)
(27, 48, 69)

Direction: In the following question, select the related letters from the given alternatives. 

AG : IO :: EK : ?

Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
 7 : 25 :: 4 : 4 :: 3 : ?

In the following question, select the related letters from the given alternatives.
AB : LM : : NO : ?

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.

PG : VM :: AB : ?