Verbal Reasoning - Mental Ability Questions

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.

A certain system is followed to solve the problem . Accordingly find out the correct answer from the alternatives for the unsolved equations.

7 x 4 x 9 = 479
9 x 5 x 2 = 592
6 x 9 x 5 = 965
8 x 6 x 2 = ?

A boy and a girl are playing in a park. The only daughter of the maternal grandfather of the girl, is the sister of the boy's father. How is the boy related to the girl?

In the following question, select the related number from the given alternatives.
AKP : 1121256 : : LNO : ?

A man is facing towards the east. He turns towards north and walks for 5 km, and then turns 270 degrees anticlockwise and walks for 12 km more. What is the minimum distance between his initial and final position?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

Abcd, ghIJ, Mnop, stUV, Yzab, ?

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

Power : Watt : : ? : ?

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