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Recent questions tagged q12-b
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One urn contains two black balls (labelled $B_1,B_2$) and one white ball.A second urn contains one black ball and two white balls (labelled $W_1,W_2$).Suppose the following experiment is performed.One of the two urns is chosen at random.Next a ball is randomly chosen from the urn.Then a second ball is chosen at random from the same urn without replacing the first ball.What is the probability that two black balls are chosen?
cbse
math
class11
ch16
probability
exemplar
q12-b
sec-a
easy
asked
Jul 8, 2014
by
sreemathi.v
1
answer
Construct the consumer price index number for 1990,taking 1989 as the base year and using simple average of price relative method for the following data :
isc
class12
modelpaper
2003
part-2
sec-c
q12
q12-b
asked
Apr 22, 2013
by
sreemathi.v
0
answers
Calculate the lower $(Q_1$) and upper $(Q_3)$ quartiles for the following distribution :
isc
class12
modelpaper
2004
part-2
sec-c
q12
q12-b
asked
Apr 19, 2013
by
sreemathi.v
0
answers
The average number,in lakhs,of working days lost in strikes during each year of the period 1981-90 was :
isc
class12
modelpaper
2005
sec-b
q12
q12-b
asked
Apr 18, 2013
by
sreemathi.v
0
answers
The table below gives details of the electricity generated in million kilowatt hours in each quarter for the years 2002 to 2004.
isc
class12
modelpaper
2006
sec-b
q12
q12-b
asked
Apr 17, 2013
by
sreemathi.v
0
answers
The production of a soft drink company in thousands of litres during each month of a year is as follows :
isc
class12
modelpaper
2007
sec-b
q12
q12-b
asked
Apr 16, 2013
by
sreemathi.v
0
answers
Given $\overrightarrow{a}=i-2j+k,\overrightarrow{b}=2i+j+k$ and $\overrightarrow{c}=i+2j-k$.Find $\overrightarrow{a}\times(\overrightarrow{b}\times \overrightarrow{c})$
isc
class12
modelpaper
2008
sec-b
q12
q12-b
asked
Apr 15, 2013
by
sreemathi.v
0
answers
An insurance company insured 4000 doctors,8000 teachers and 12,000 engineers.The probabilities of a doctor,a teacher and an engineer dying before the age of 58 years are 0.01 ,0.03 and 0.05 respectively.If one of the insured persons dies before the age of 58 years,find the probability that he is a doctor.
isc
class12
modelpaper
2009
sec-b
q12
q12-b
asked
Apr 15, 2013
by
sreemathi.v
0
answers
Five bad eggs are mixed with 10 good ones.If three eggs are drawn one by one with replacement ,find the probability distribution of the number of goods eggs drawn.
isc
class12
modelpaper
2010
sec-b
q12
q12-b
asked
Apr 12, 2013
by
sreemathi.v
0
answers
Bag contains 2 white,1 black and 3 red balls,Bag B contains 3 white ,2 black and 4 red balls and Bag C contains 4 white ,3 black and 2 red balls.One Bag is chosen at random and 2 balls are drawn at random from that Bag.If the randomly drawn balls happen to be red and black,what is the probability that both balls come from Bag B?
isc
class12
modelpaper
2011
sec-b
q12
q12-b
asked
Apr 11, 2013
by
sreemathi.v
0
answers
The probability that a bulb produced by a factory will fuse in 100 days of use is 0.05.Find the probability that out of 5 such bulbs,after 100 days of use :
isc
class12
modelpaper
2012
sec-b
q12
q12-b
asked
Apr 10, 2013
by
sreemathi.v
0
answers
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