In each of the following questions, select the related word/ number/ letter from the given alternatives.

15 : 2601 : : 23 : ? 

Sarita is standing having her back towards the railways track. A train is running from her left to right. If the train smokes in the South, then direction of Sarita’s face is-

Direction: Read the following information and answer the questions given below it:
Six students A, B, C, D, E and F are sitting in the field. A and B are from Nehru House while the rest belong to Gandhi House. D and F are tall while the others are short. A, C and D are wearing glasses while the others are not.

Which short student of Gandhi House is not wearing glasses?

25 : 81 : : 36 : ?

Find out which of the diagrams given in the alternatives correctly represent the relation- ship stated in the question
Sharks, Whales, Turtles.

In the given figure, which number presents steel bottles which are caps?

How is A related to F in the given expression? 

A + B × C ÷ D * E # F 

Out of four figures which figure will best represent the relationship among st the classes:
(1) Sparrow
(2) Birds
(3) Mice