Verbal Reasoning - Mental Ability Questions

In a row of boys, Amit is ranked 12th from top and Ratan is 15th from bottom. They interchange their position. Ratan now becomes 37th from bottom. How many total boys are there in the row?

In each question below are three statements followed by two conclusions numbered I and II. You have to take the three given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the three statements disregarding commonly known facts.
Statements:
All numbers are digits.
All alphabets are numbers.
All words are alphabets.
Conclusions:
I. All words are digits.
II. Some numbers are not words.

In the following question, select the related word from the given alternatives.
Calendar : Date : : Index : ?

Which word comes first in the dictionary?

In a certain code language "CANADA" is written as "BZMBEB". How is "SYDNEY" written in that code language?

In the following question, select the related word pair from the given alternatives.

Power : Watt : : ? : ?

Arrange the given words in the sequence in which they occur in the dictionary.
i. Forehead
ii. Forensic
iii. Forest
iv. Foremost

If 75$26 = 4, 69$53 = 7 then what is the value of 82$46 = ?