Gopi buys a fish from a shop for his aquarium. The shopkeeper takes out one fish at random from a tank containing 5 male fish and 8 female fish . What is the probability that the fish taken out is a male fish ?

A box contains 144 pens of which 20 are defective and the others are good. A person will buy a pen if it is good and will not buy if it is defective. The shopkeeper draws one pen from the box at random and gives it to the person. What is the probability that the person (a) will buy it? (b) will not buy it?

Why do fishes die when taken out of water?

A box contains 5 red marbles, 8 white marbles and 4 green marbles . One marble is taken out of the box at random. What is the probillity that the marble taken out will be red ?

A box contains 5 red marbles, 8 white marbles and 4 green marbles . One marble is taken out of the box at random. What is the probillity that the marble taken out will be white ?

A box contains 5 red marbles, 8 white marbles and 4 green marbles . One marble is taken out of the box at random. What is the probillity that the marble taken out will be not green ?

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?

A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random . What is the probability that the marble taken out will be (i) red ? (ii) white ? (iii) not green ?

A bag contains 3 red balls, 5 white balls and 8 blue balls. One ball is taken out of the baf at random. fine the probability that the ball taken out is (a) a red ball, (b) not a white ball.

A bag contains cards bearing numbers from 11 to 30. A card is taken out of the bag at random. Find the probability that the selected card has multiple of 5 on it.

A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random. What s the probability that the marble taken out will be (i) red? (ii) white? (iii) not green?