The curved surface area of a right circular cylinder of radius 2 cm is 264 cm². The height of the cylinder, in cm, is

In a mixture of 35 liters, the ratio of milk and water is 4 : 1. How many liters of water must be added to make the ratio 2 : 3?

A pump can fill a cistern in 40 minutes and another pump can empty the filled up cistern in 1 hour. By mistake, without closing the second pump, the first pump is opened. The time in which the empty cistern will be filled up is

A and B together can complete a work in 12 days, A alone can complete in 20 days. If B now does the work only for half a day daily, then the number of days required to complete the work, by A and B together, is

The greatest fraction out of $$ {2\over 5},{5\over 6},{11\over 12},and \ {7\over8}$$ is

The diameter of a roller is 84 cm and its length is 120 cm. It makes 500 complete revolutions to move once over to level a playground. Find the area of the playground.

In the following questions, in the following passages some of words have been left out. Read the passage carefully and choose the correct answer to each question out of the four alternatives and fill in the blanks.

Tennis is a game that gives one plenty of exercise; It develops ___(21)__ of eye and limb and ___(22)___the brain too into___(23)___. A few sets of tennis keep one physically and ___(24)___fit. But for the indoors, chess is the queen of games. People say chess is a __(25)__game because only two can play.

Fill in the blank at (25).

In the following questions, in the following passages some of words have been left out. Read the passage carefully and choose the correct answer to each question out of the four alternatives and fill in the blanks.

Tennis is a game that gives one plenty of exercise; It develops ___(21)__ of eye and limb and ___(22)___the brain too into___(23)___. A few sets of tennis keep one physically and ___(24)___fit. But for the indoors, chess is the queen of games. People say chess is a __(25)__game because only two can play.

Fill in the blank at (24).