A batch of bottles was packed in 25 boxes with 12 bottles in each box.If the same batch is packed using 20 bottles in each box,how many boxes would be filled?

A machine in a soft drimk factory fills 840 bottles in six hours.How many bottles will it fill in five hours?

Give two new examples of each shape. Cuboid : Books, Match box

There are four balls of different colours and four boxes of colours same as those of the balls. The number of ways in which the balls, one in each box, could be placed such that a ball does not got to box of its own colour own colour , is :

A square piece of tin of side 18 cm is to be made into a box without top, by cutting off square from each corner and foling up the flaps of the box. What should be the side of the square to be cut off so that the volume of the box is maximum possible.

There are 6 marbles in a box with numbers from 1 to 6 marked on each of them: What is the probability of drawing a marble with number 2?

There are 6 marbles in a box with numbers from 1 to 6 marked on each of them: what is the probability of drawing a marble with number 5?

Five balls are to be placed in three boxes in how many diff. ways can be placed the balls so that no balls remain empty if .

16 glass spheres each of radius 2 cm are packed into a cuboidal box of internal dimensions 16cmxx8cmxx8cm and the box is filled with water. Find the volume of water filled in the box.

Given three identical boxes I, II and III, each containing two coins. In box I, both coins are gold coins, in box II, both are silver coins and in the box III, there is one gold and one silver coin. A person chooses a box at random and takes out a coin. If the coin is of gold, what is the probability that the other coin in the box is also of gold?