Verbal Reasoning - Mental Ability Questions

A shopper in a mart loads his trolley and walks 30 m through an alley which is going South, then he turns to his left and walks 10 m, then he turns North and walks another 10 m, then he turns West and walks 45 m and then he turns North and walks 20 m. Where is he now with reference to his starting position?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
642 x 6 ÷ 25 + 4 = ?

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

Mr. X starts from point A travels 80 km towards west, takes a left turn, travels 50 km and reaches point B. What is the shortest distance between points A and B ?

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

4, 10, 33, 136, ?

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

HK, ? , PQ, TT, XW

A prime number between 10 and 50 remains unchanged if its digits are reversed. Then the square of such a number is:

If HEAR is written as KJHA, then MILK can written as