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.

Window : Curtain ::?:?

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

(21, 15, 72)

How many persons sit in the row?

If GO = 715 and POT = 161520, then MOTH =

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

CROW : DLIX :: MOST : ?

If 21 @ 7 = 18 and 43 @ 22 = 68, then 48 @ 49 = '?'.

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

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

Select the related word/letters/number from the given alternatives.

125 : 243 :: 64 : ( ?)