At the beginning of a class period, half of the students in a class go to the library. Later in the period, half of the remaining students go to the computer lab. If there are 8 students remaining in the class, how many students were originally in the cla

The dimensions of a box are 2, 3 and 4 meters. The cost of painting the outer sides of the box at the rate of...

A coin is tossed twice. What is the probability of getting head on first toss and tail on second toss?

The average of eight numbers in 14. The average of six of these numbers 16. The average of the remaining two n...

A motorist travels to a place 150 km away at an average speed of 50 km and returns at 30 km per hour. His aver...

If x : y = 5 : 3, then 8x - 5y : 8x + 5y =?

The sum of first 17 items of the series 5, 9, 13, 17,....... is-