Assertion (A): James Watt invented the steam engine.
Reason (R): It was invented to pump out the water from the flooded mines.

In a class of 40 students, Deepti is 26th from left and Rani is 26th from right. How many students are there between them in row? 

In the following diagram find the missing number?

In a row of boys, if A is 10th from left and B is 9th from the right and interchange their positions, A becomes 15th from the left. How many boys are there in the row?

A man walks 10 km in north and turns right and walks 20 km. A gain he turns right and walks 50 km if he is 20 km west from the initial point. Now find that distance how much he walk from initial point. 

Three of the following four words are alike in a certain way and one is different. Pick the odd word out.

In the following question, select the related word pair from the given alternatives.

Mirage : Desert : : ?

380, 645, 557, 656, 762, 875, ?