Verbal Reasoning - Mental Ability Questions

Select the odd word from the given alternatives.

F is the Father of S and D. D's Paternal aunt's daughter is E. How is F related to E?

Choose the related word/letters/number from the given alternatives.
Nest : Bird : : Den : ?

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

Q, P, O, N, ?

Choose the related word/letters/number from the given alternatives.
NPR : GHI : : TVX : ?

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

If '+' means 'x' , '­' means '÷' , 'x' means '­' and '÷' means '+' , then what will be the value of 16 ÷ 4 x 10 ­ 5 + 8 = ?

In a certain code language, "BISLERI" is written as "IREBISL". How is "PANTHER" written in that code language?