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Assuming that on an average one telephone out of 10 is busy,seven telephone numbers are randomly selected and called.Find the probability that three of them will be busy.
This question has multiple parts. Therefore each part has been answered as a separate question on Clay6.com
isc
class12
modelpaper
2007
sec-a
q8
q8-b
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Apr 16, 2013
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sreemathi.v
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Apr 17, 2013
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Apr 12, 2013
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There are two bags.One bag contains six green and three red balls.The second bag contains five green and four red balls.One ball is transferred from the first bag to the second bag.Then one ball is drawn from the second bag.Find the probability that it is a red ball.
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Apr 12, 2013
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isc
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2010
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The probability that a teacher will give an unannounced test during any class meeting is $\large\frac{1}{5}$.If a student is absent twice,find the probability that the student will miss at least one test.
asked
Apr 15, 2013
by
sreemathi.v
isc
class12
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2008
sec-a
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Kamal and Monika appear for an interview for two vacancies.The probability of Kamal's selection is $\large\frac{1}{3}$ and that of Monika's selection is $\large\frac{1}{5}$.Find the probability that only one of them will be selected.
asked
Apr 16, 2013
by
sreemathi.v
isc
class12
modelpaper
2007
sec-a
q1
q1-7
0
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A box contains 30 bolts and 40 nuts .Half of the bolts and half of the nuts are rusted.If two items are drawn at random from the box,what is the probability that either both are rusted or both are bolts?
asked
Apr 10, 2013
by
sreemathi.v
isc
class12
modelpaper
2012
sec-a
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A card is drawn at random from a pack of 52 playing cards.What is the probability that the card drawn is neither a spade nor a queen?
asked
Apr 16, 2013
by
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isc
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2006
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