Spider: Insect :: Crocodile : ? 

Find the next number in the given series.

3, 13, 31, ? , 91

Direction: In the following question, select the related letters from the given alternatives.

Elephant : Howdah :: Horse : ? 

DIRECTIONS: Study the following arrangement carefully and answer the questions given below.
W 3 # R @ E J K T 4 B 9 I H D U 8 1 H % A V 5 δ 7 M P 2 Q $ 6

Which of the following is the sixth to the right of the twenty-first from the right end of the above arrangement?

If A = 1; AND = 19 then BAT =? 

A Which one is odd word in the following
1. Cauliflower 2. Mushroom 3. Carrot 4. Potato 5. Brinjal 

A is 13th from top, B is 18th from bottom. When A and B change their position then A becomes 21th from top. What is the new position of B from bottom?