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In a class having 70% boys, 20% of the boys and 10% of the girls are players. A student is selected at random from the class and is found to be a player. Find the probability that the selected student is a girl.
cbse
class12
modelpaper
2012
sec-a
q10
math
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asked
Jan 3, 2013
by
thanvigandhi_1
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votes
0
answers
In a class having 70% boys, 20% of the boys, and 10% of the girls are players. A student is selected at random from the class and found to be a player. Find the probability that the selected is a girl. Explain the contribution of sports in inculcating human values.
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Jan 21, 2013
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cbse
class12
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2012
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In a class, having 60% boys, 5% of the boys and 10% of the girls have an I.Q. of more than 150. A student is selected at random and found to have an I.Q. of more than 150. Find the probability that the selected student is a boy.
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Jan 4, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-b
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0
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0
answers
A class consists of 50 students out of which there are 10 girls.In the class 2 girls and 5 boys are rank holders in an examination.If a student is selected at random from the class and is found to be a rank holder,what is the probability that the student selected is a girl?
asked
Apr 15, 2013
by
sreemathi.v
isc
class12
modelpaper
2008
sec-c
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0
votes
0
answers
In a group of student, selection of four students for cultural activity from 3 boys and 3 girls has to be done. Find the probability that either 3 boys and 1 girl or 3 girls and one boy are selected.
asked
Feb 2, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-b
q22
math
0
votes
0
answers
(i) In a group of student, selection of four students for cultural activity from 3 boys and 3 girls has to be done. Find the probability that either 3 boys and 1 girl or 3 girls and one boy are selected. (ii) Write the importance of co-curricular activities in inculcating human values.
asked
Jan 14, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-b
q22
math
+1
vote
1
answer
A class has fifteen boys and five girls. Suppose three students are selected at random from the class. The probability that three are two boys and one girl is
asked
Sep 23, 2013
by
meena.p
jeemain
eamcet
math
2011
q55
0
votes
1
answer
A class consists of $10$ boys and $8$ girls.Three students are selected at random.Find the probability that the selected row has
asked
Jul 16, 2013
by
sreemathi.v
cbse
class12
modelpaper
2005
sec-a
q4
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