Verbal Reasoning - Mental Ability Questions

Pointing to a woman, I said that her brother's only son is the brother of my wife. How is the woman related to me?

In the below Venn diagram which number space represents the girls who are athletes but not disciplined?

In the following Venn diagram which letters represents all those who play Cricket as well as Kabaddi and also all the three games?

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

In the following question, select the odd letter/letters from the given alternatives.

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, ?

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

5 , 9 , 6 , 11, 7 , ?

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.

20 + 16 x 6 ÷ 10 - 4 = ?