Verbal Reasoning - Mental Ability Questions

If 'P 3 Q' means 'P is daughter of Q', 'P 5 Q' means 'P is father of Q', 'P 7 Q' means 'P is mother of Q' and 'P 9 Q' means 'P is sister of Q', then how is J related to K in J 3 L 9 N 3 O 5 K?

Select the odd word from the given alternatives.

If 6#30=5; 8#24=3; 7#28=4; then what is the value of 8#40=?

Choose the related word/letters/number from the given alternatives.
36 : 6 : : 441 : ?

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

1.5, 9/4, 3, ? , 4.5, 21/4

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

75 - 5 + 25 ÷ 125 = ?

In the following question, select the related letters from the given alternatives.
KLMN : IJKL : : TUVW : ?

Select the related letters from the given alternatives.
DFI : ACF :: OQT : ?