During the Gupta period, what name was used for the

Some equations are solved based on a certain system. On the same basis find out the correct answer for the unsolved equation.  

If 24 @ 15 = 46 and 56 @ 24 = 108, then 45 @ 32 = '?'.

If E = 10, HIM = 60, then ‘SWIM’ will be equal to?

In each of the following questions, choose that set numbers from the four alternative sets, that is similar to the given set.

Change the question mark with the option that follows the logic applied to the first pair. 

Television : Electricity :: Car : ??

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

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

46: 146 :: 65:?

Select the right analogous pair from the given options.

Melt : Liquid :: Freeze : ?