Verbal Reasoning - Mental Ability Questions

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Improvement

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

DF, GJ, KM, NQ, RT, ?

In the above Venn diagram, what is the sum of the numbers that represent all those athletes who are not disciplined?

X walks 3 km towards west, and then turns and travels 4 km towards north. The shortest distance between the start and the end point of X's journey is ____.

If the sum of three consecutive numbers is 15, what is the square of the middle number ?

Two pickup trucks X and Y start from the same place. Truck X travels East 15 km and then turns right and travels 8 km. In the meanwhile truck Y travels 7 km West, then 3 km North, then 2 km West , then it turns left and travels 11 km. Where is truck Y with respect to truck X?

Five people P, Q, R, S and T visit an office on certain days of a week. They work as a plumber, carpenter, cook, electrician and doctor in random order. A person pursues only one profession and visits the office only one day in the week. Consider the following information and answer questions based on it.

1. The plumber visits office every Monday.
2. P is an electrician who comes neither on Tuesday nor Thursday.
3. T is a carpenter and R is not plumber
4. The person who visits the office on Thursday is not a doctor.
5. S works on a Tuesday and T works on the following day.

The doctor visits the office on

Saurav, Mohit, Mukesh, Sumit and Bhim are arranged in descending order of their height from top to bottom. Saurav is at third place. Bhim is between Sumit and Saurav while Sumit is not at the top end. Who is at second place from the top?