Verbal Reasoning - Mental Ability Questions

If 15#2 = 26, 11#3 = 16 and 10#9 = 2, then find the value of 11#4 = ?

X and Y both start from a same point. X walks 17 m West, then turns to his right and walks 13 m. At the same time, Y walks 9 m North, then turns East and walks 7 m, then turns to his left and walks 4 m. Where is Y now with respect to the position of X?

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

In the following question, select the related number from the given alternatives.
ACOUSTIC : 91 : : RENOUNCE : ?

Find out the odd word/letters/number/number pair from the given alternatives.

Select the missing number.

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

CDE, IHG, KLM, QPO, STU, ?

Rearrange the jumbled letters to make a meaningful word and then select the one which is different.