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Probability
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4 persons are chosen at random from a group of 3 men, 2 women, 3 children. Find the probability that out of 4 choice, exactly 2 are children.
cbse
class12
additionalproblem
kvquestionbank2012
ch13
q8
p41
math
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Feb 5, 2013
by
meena.p
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If on an average 1 ship in every 10 sinks, find the chance that out of 5 ships atleast 4 will arrive safely.
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A man fires 4 bullets on a thief. The probability that the thief will be killed by one bullet is 0.6. Find the probability that the thief is still alive.
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If A, B, C are events associated with random expt. Prove that \[ PtP(A\cup B\cup C)=P(A)+P(B)+P(C)-P(A\cap B)-P(A\cap C)-P(B\cap C)+P(A\cap B\cap C)\]
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Feb 5, 2013
by
meena.p
cbse
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kvquestionbank2012
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Urn A contain 1 white, 2 black, 3 red balls. Urn B contain 2 white, 1 black, 1 red balls. Urn C contains 4 white, 5 black, 3 red balls. Two balls are drawn from one of the Urn and found to be one white and one red. Find the probabilities that they come from Urns A, B or C.
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Feb 5, 2013
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meena.p
cbse
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kvquestionbank2012
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Given that the two numbers appearing on two dice are different. Find the probability of the event 'the sum of numbers on the dice is 4'.
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Feb 5, 2013
by
meena.p
cbse
class12
additionalproblem
kvquestionbank2012
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