An urn contains 10 white and 3 black balls. another urn contains 3 white and 5 black balls. Two are drawn from the first urn and put into the second urn and then a ball is drawn from the latter. Find the probability that it is a white ball.
Consider an experiment of tossing a coin.If the coin shows heads,toss it again but if it shows tails,then throw a die.Find the conditional probability of event that 'the die shows a number greater than 4' given that 'there is atleast one tail'.
Q.1 A speaks truth in 60% of the case and B in 90% of the cases. In what percentage of case are they likely to contradict each other in stating the same fact?
Q.2 A problem in mathematics is given to three studenys (A, B, C)whose chances of solving it are 1/3, 1/5 and 1/6 respectively. Find the probability that(i) one of them is able to solve the problem correctly. (ii) any two out of A, B, C will solve the problem?
The content of Urn I, II, III are as follows :
Urn I : 1 white, 2 black and 3 red balls
Urn II : 2 white, 1 black and 1 red balls
Urn II : 4 white, 5 black and 3 red balls
one urn is choosen and two balls are drawn. They happen to be white and red. What is the probability that they come from urn III ?
A and B throw a die alternatively till one of them gets a '6' and wins the game. find their respective probablilites of winning, if A syarts first.
Two bags A and B contain 4 white balls and 3 black balls ,and 2 white balls and 2 black balls respectively .From bag A two balls are transferred to bag B.find the probability of drawing
1.2 white ball from bag B
2. 2 black balls from bag B
3.1 white ball and 1 black ball from bag B
A man takes astep forward with probability 0.4 and backward with probability 0.6 find the the probability that at the end of eleven steps he is one step away from the starting point
find the probability distribution of the number of doublets in 4 throws of a pair of dice.
The PROBABILITY of a shooter hitting a target is 3/4. How many minimum no. of times must he/she fire so that the probability of hitting the target atleast once is more than 0.99?????
a lady gives a dinner party to six guests. the number of ways in which they may be selected from among ten friends, if two of the friends will not attend the party together is ?
Three numbers are chosen at random without replacement from {1 , 2, 3,...8} .The propability that thier minimum is 3 , given that their maximum is 6. is ..ans. is 1/5.
plzz explain..
Assume that the chances of the patient having a heart attack are 40%. It is also assumed that a meditation and yoga course reduce the risk of heart attack by 30% and prescription of certain drug reduces its chances by 25%. At a time a patient can choose any one of the two options with equal probabilities. It is given that after going through one of the two options the patient selected at random suffers a heart attack. Find the probability that the patient followed a course of meditation and yoga?
An urn contains 10 white and 3 black balls. another urn contains 3 white and 5 black balls. Two are drawn from the first urn and put into the second urn and then a ball is drawn from the latter. Find the probability that it is a white ball.
Consider an experiment of tossing a coin.If the coin shows heads,toss it again but if it shows tails,then throw a die.Find the conditional probability of event that 'the die shows a number greater than 4' given that 'there is atleast one tail'.
Q.1 A speaks truth in 60% of the case and B in 90% of the cases. In what percentage of case are they likely to contradict each other in stating the same fact?
Q.2 A problem in mathematics is given to three studenys (A, B, C)whose chances of solving it are 1/3, 1/5 and 1/6 respectively. Find the probability that(i) one of them is able to solve the problem correctly. (ii) any two out of A, B, C will solve the problem?
The content of Urn I, II, III are as follows :
Urn I : 1 white, 2 black and 3 red balls
Urn II : 2 white, 1 black and 1 red balls
Urn II : 4 white, 5 black and 3 red balls
one urn is choosen and two balls are drawn. They happen to be white and red. What is the probability that they come from urn III ?
A and B throw a die alternatively till one of them gets a '6' and wins the game. find their respective probablilites of winning, if A syarts first.
Two bags A and B contain 4 white balls and 3 black balls ,and 2 white balls and 2 black balls respectively .From bag A two balls are transferred to bag B.find the probability of drawing
1.2 white ball from bag B
2. 2 black balls from bag B
3.1 white ball and 1 black ball from bag B
A man takes astep forward with probability 0.4 and backward with probability 0.6 find the the probability that at the end of eleven steps he is one step away from the starting point
find the probability distribution of the number of doublets in 4 throws of a pair of dice.
The PROBABILITY of a shooter hitting a target is 3/4. How many minimum no. of times must he/she fire so that the probability of hitting the target atleast once is more than 0.99?????
a lady gives a dinner party to six guests. the number of ways in which they may be selected from among ten friends, if two of the friends will not attend the party together is ?
Three numbers are chosen at random without replacement from {1 , 2, 3,...8} .The propability that thier minimum is 3 , given that their maximum is 6. is ..ans. is 1/5.
plzz explain..
Assume that the chances of the patient having a heart attack are 40%. It is also assumed that a meditation and yoga course reduce the risk of heart attack by 30% and prescription of certain drug reduces its chances by 25%. At a time a patient can choose any one of the two options with equal probabilities. It is given that after going through one of the two options the patient selected at random suffers a heart attack. Find the probability that the patient followed a course of meditation and yoga?