7 : 30 :: 17 : ?

Direction: Select the related word from the given alternatives.

Mango: Fruit :: Potato:?

In a certain code SISTER is written as RHRSDQ. How is UNCLE written in that code? 

Directions: In each question below are two/three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follow (s) from the statements disregarding commonly known facts.
Statements:
Some notes are coins.
No coin is a card.
Conclusions:
I. All cards can be notes.
II. Some notes are neither coins nor cards.
Give Answer
(A) if only conclusion I follows.
(B) if only conclusion II follows.
(C) if either conclusion I or conclusion II follows.
(D) if neither conclusion I nor conclusion II follows.
(E) if both conclusion I and conclusion II follows.

In a row of boys, if A is 10th from left and B is 9th from the right and interchange their positions, A becomes 15th from the left. How many boys are there in the row?

Mouni is 2 years elder than Sanjay. If the age of Sanjay 10 years ago was 13 years, then Mouni's present age is

5 : 30 :: 8 : ?