Verbal Reasoning - Mental Ability Questions

Select the missing letter from the given responses?

Johnny's father is the brother­in­law of Nisha's only sister. How is Johnny related to Nisha?

Find the next number in the given series. 9, 11, 15, 17, 21, 23, ?

A man walks 7 km towards south and turns to the left. After walking 5 km, he turns to the right and walks 7 km. In which direction is he now from the starting point?

Which of the following interchanges in signs and numbers will make the given equation correct?
7 x 9 + 5 = 68

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

1/4, 0.65, ?, 29/20, 1.85

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

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
25 + 10 ÷ 240 x 16 = ?