A student loses a mark for every wrong answer and scores 2 marks for every correct answer. If he answers all the 60 questions in an exam and scores 39 marks, how many of them were correct ?

If a man drives a car at a speed of 50 km per hour, then calculate the distance covered by the man in 10 minut...

If the scale used for drawing a map states that the actual distance of 50 km is represented by 1 cm on the map...

It is given that the weight of an empty box is 1000 gm and the total weight of the box when filled with apples...

If we increase the area of a circle by 32% then , calculate the approximate increase in the radius of the same...

If a +b =10 and a-b =20 , then what will be the value of a/b?

In reply to the rising public interest in the Internet , Microsoft makes an add on to the operating classifica...