Verbal Reasoning - Mental Ability Questions

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

462 = 551
398 = 487
856 = ?

 In a certain code language, “PRANK” is written as “RUESQ”. How is “RATES” written in that code language?

I go 5 km East, then turn right and go 8km. Then I turn left and go 5 km and then I turn left and go 8 km. At what distance am I from the starting point?

If 8 θ 12 δ 6 = 60 and 13 θ 15 δ 11 = 74, then 18 θ 21 δ 15 = ?

Each of the following questions hasfour statements. Three are logically correct. Some of which may look factually absurd. Ignore this absurdity and look to the logical corrections. Choose the statement which is wrong or doubtful:

A paper boy cycles 10 km East, then turns South and cycles 3 km, then turns West and cycles 6 km, then turns to his right and cycles 3 km. Where is he now with reference to his starting position?

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

DE, HI, LM,?

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

YXWv, TSrQ, OnML, jIHG, EDCb, ?