How many such pairs of letters are there in the word EFFICIENCY each of which has as many letters between them in the word as there are between them in the English alphabet?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
15, 26, 48, 81, 125, ?

Find the missing number?

In the following question, select the odd number from the given alternatives.

A square transparent sheet with a pattern is given. Figure out from amongst the four alternatives as to how the pattern would appear when the transparent sheet is folded at the dotted line.

COURAGEOUS 

Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster.

GOOD : HSXT :: BEST : CIBJ :: COOL : ?

Directions: Study the following information to answer the given questions.

In a certain code language ‘firefighters are army men’ is written as ‘tee mee kee’, ‘courageous people are army men’ is written as ‘kee loo nee tee’, ‘courageous being enthusiastic’ is written as ‘loo pee jee’, ‘ people are enthusiastic’ is written as ‘kee nee pee’ and ‘positive people are unpleasant’ is written ‘nee kee dee see’.

Which of the following is the code for ‘firefighters army men belong to positive people’?