Verbal Reasoning - Mental Ability Questions

How many pairs of letter are there in the word 'BUCKET' which have as many letters between them in the word as in the alphabet ? 

Identify the diagram that best represents the relationship among classes given below:

Editors, Professors and Men

If the last four letters of the word 'CONCENTRATION' are written in reverse order followed by next two in the reverse order and next three in the reverse order and then followed by the first four in the reverse order, counting from the end, which letter would be eighth in the new arrangement ?

When I went back to my hometown three years ago, I found that a lot of changes ______.

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

RIP, TLT, VOX, XRB, ?

In the following question, select the missing number from the given series.

13, 16, 20, 23, 27, ?

The following question consist of two words each that have a certain relationship to each other, followed by lettered pairs of words . Select the lettered pair that has the same relationship as the original pair of words. 

Proscenium : Stage

Arun and Amit started walking from two different points 'A' and 'B' respectively.Arun walks 2 kms North and turns to the East and walks 3 kms and again turns to North walks 4 kms and finally turns to East and Walks 5kms to reach point 'C'. Similarly, Amit walks 2 kms North and turns to west and walks 3 kms and finally turns to North, walks 4 kms and meets Arun at point 'C'. What is the distance between Arun and Amit's starting points?