The point Q(a, b ) is first reflected in y-axis to Q1 and Q1 is reflected in x-axis to (-5,3 ). The co-ordinates of point Q are 

If a wire is bent into the shape of a square, the area of the square is 81 sq. cm. When the wire is bent into a semicircular shape, the area of the semicircle is 

Vinit and Gopal can do a work together in 4 days. Shyam and Mohan can do the same work in 12 days. So, in how many days can all four complete that work together?

A boat goes 75 km upstream in 3 hours and 60 km downstream in 1.5 hours. Then the speed of the boat in still water is: 

In an election between two candidates, 75% of the voters cast their votes, out of which 2% votes were declared invalid. A candidate got 9261 votes which were 75% of the valid votes. The total number of voters enrolled in that election was:

Runs scored by Rohit sharma in some 3 test Matches against Pakastian are as follows 101, 126, 32, 38, 52, and 40. Find median of the given scores.