Which substance coated on plastic tape? 

If 31 @ 9 = 24 and 53 @ 33 = 96, then 19 @ 47 = '?'.

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

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.

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

Select the option that is related to third letter cluster in the same way second letter cluster is related to first letter cluster.

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

1444: 38:: 676: ?

11 : 110 :: 13 : ?