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Two fair dices are thrown. Given that the sum of the dice is less than or equal to 4, find the probability that only one dice shows two.
There are two bags, one of them contains 5 red and 7 white balls and the other 3 red and 12 white balls, and a ball is to be drawn from one or the other of the two bags. Find the chance of drawing a red ball.
In two bags there are to be put altogether 5 red and 12 white balls, neither bag being empty. How must the balls be divided so as to give a person who draws one ball from either bag the greatest chance of drawing a red ball?
What is the chance that a leap year, selected at random, will contain 53 Sundays?
A child is asked to pick up 2 balloons from a box containing 10 blue and 15 red balloons. What is the probability of the child picking, at random, 2 bal loons of different colours?
Three fair dice are rolled simultaneously. Find the probability that the first die shows a composite number, second die shows an odd number and third die shows an odd prime number.
Three groups of children contain 3 girls and 1 boy, 2 girls and 2 boys, and 1 girl and 2 boys respectively. One child is selected at random from each group. The probability that the three selected consist of 1 girl and 2 boys is
Ross draws a card from a pack of 52, replaces it and shuffles it. He continues doing it until he draws a heart. What is the probability that he has to make 3 trials?
For the above question, the probability that exactly 3 tests will be required to identify the 2 faulty machines is,
12 people are seated around a round table. What is the probability that two particular persons sit together ?
There are 4 red, 6 blue and 8 white balls in a bag. Raju drew 2 balls from it one after another. Find the probability of the second ball drawn being blue if the first ball is replaced.?
183 videos152 docs113 tests

Probability (Hard Level) Test  10 ques 
183 videos152 docs113 tests

Probability (Hard Level) Test  10 ques 