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Recent questions tagged q8-a
Questions
A team of medical students doing their internship have to assist during surgeries at a city hospital.The probabilities of surgeries rated as very complex,complex,routine,simple or very simple are respectively 0.15,0.20,0.31,0.26,0.08.Find the probabilities that a particular surgery will be rated complex or very complex
cbse
math
class11
ch16
probability
exemplar
q8-a
sec-b
medium
asked
Jul 7, 2014
by
sreemathi.v
1
answer
The position vectors of the vertices of a triangle are given as $2\hat{i}-\hat{j}+\hat{k},\hat{i}-3\hat{j}-5\hat{k}$ and $3\hat{i}-4\hat{j}-4\hat{k}$.Prove that it is a right-angled triangle.
isc
class12
modelpaper
2003
part-2
sec-b
q8
q8-a
asked
Apr 22, 2013
by
sreemathi.v
0
answers
Show that the sum of the squares on the sides a parallelogram is equal to the sum of the squares on the diagonals of the parallelogram.
isc
class12
modelpaper
2004
part-2
sec-b
q8
q8-a
asked
Apr 19, 2013
by
sreemathi.v
0
answers
In a certain city,the probability of not reading the morning newspaper by the residents is $\large\frac{1}{2}$ and that of not reading the evening newspaper is $\large\frac{2}{5}$.The probability of reading both the newspapers is $\large\frac{1}{5}$.Find the probability that a resident reads either the morning or evening or both the papers.
isc
class12
modelpaper
2005
sec-a
q8
q8-a
asked
Apr 17, 2013
by
sreemathi.v
0
answers
A and B throw two dice each.If A gets a sum of 9 on his two dice ,then find the probability of B getting a higher sum.
isc
class12
modelpaper
2006
sec-a
q8
q8-a
asked
Apr 16, 2013
by
sreemathi.v
0
answers
The bag 'A' contains 3 white and 2 black balls while the bag 'B' contains 2 white and 5 black balls.One of the bags is chosen at random and a ball is drawn from it.What is the probability that the balls is white.
isc
class12
modelpaper
2007
sec-a
q8
q8-a
asked
Apr 16, 2013
by
sreemathi.v
0
answers
There are 3 urns A,B and C.Urn A contains 4 red balls and 3 black balls.Urn B contains 5 red balls and 4 black balls.Urn C contains 4 red balls and 4 black balls.One ball is drawn from each of these urns.What is the probability that the 3 balls drawn consist of 2 red balls and 1 black ball?
isc
class12
modelpaper
2008
sec-a
q8
q8-a
asked
Apr 15, 2013
by
sreemathi.v
0
answers
Bag A contains 5 white and 4 black balls,and bag B contains 7 white and 6 black balls.One ball is drawn from the bag A and with out noticing its color,is put in the bag B.If a ball is then drawn from bag B,find the probability that it is black in colour.
isc
class12
modelpaper
2009
sec-a
q8
q8-a
asked
Apr 12, 2013
by
sreemathi.v
0
answers
Akhil and Vijay appear for an interview for two vacancies.The probability of Akhil's selection is $\large\frac{1}{4}$ and Vijay's selection is $\large\frac{2}{3}$.Find the probability that only one of them will be selected.
isc
class12
modelpaper
2010
sec-a
q8
q8-a
asked
Apr 12, 2013
by
sreemathi.v
1
answer
A purse contains 4 silver and 5 copper coins.A second purse contains 3 silver and 7 copper coins.If a coin is taken out at random from one of the purses,what is the probability that it is a copper coin?
isc
class12
modelpaper
2011
sec-a
q8
q8-a
asked
Apr 11, 2013
by
sreemathi.v
0
answers
A bag contains 8 red and 5 white balls.Two successive draws of 3balls are made at random from the bag without replacements.Find the probability that the first draw yields 3 white balls and the second draw 3 red balls.
isc
class12
modelpaper
2012
sec-a
q8
q8-a
asked
Apr 10, 2013
by
sreemathi.v
0
answers
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