Verbal Reasoning - Mental Ability Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

M_N_M_MR_R_N

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

EF, K, JK, U, OP, ?

In the following question, by using which mathematical operators will the expression become correct?
15 _ 3 _ 4 _ 20

A shopper in a mart loads his trolley and walks 30 m through an alley which is going South, then he turns to his left and walks 10 m, then he turns North and walks another 10 m, then he turns West and walks 45 m and then he turns North and walks 20 m. Where is he now with reference to his starting position?

A is to the south­east of B. In which direction is B with respect to A?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. Boxing, Tennis Doubles,Volleyball, ?

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

Leaf, Caterpillar, Frog, ?

Four words have been given below of which three are alike in some way and one is different. Choose the odd one out.