Verbal Reasoning - Mental Ability Questions

In the following question, select the related letter pair from the given alternatives.PIR : OHQ : : ? : ?

If 80&10 = -8, 50&2 = -25 and 80&16 = -5, then find the value of 20&5 = ?

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

8,21,60,177,?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
BT, DR, FP, ?

Find the odd word/letters/number pair from the given alternatives.

In a row of swimmers Manish, is 23rd from the left end. Ramesh is 11 ranks to the left of Manish. If Ramesh is 16th from right end, then how many swimmers are there in this row?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. 12, 60, 240, 720, ?

Choose from the four diagrams given below, the one that illustrates the relationship among 'Languages', 'French' and 'German'.