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Recent questions tagged p277
ASK
The normal to the rectangular hyperbola $xy=9$ at$(6,\frac{3}{2})$ meets the curve again at
tnstate
class12
bookproblem
p277
objective
q121
asked
May 14, 2013
by
poojasapani_1
1
answer
The area of the triangle formed by the tangent at any point on the rectangular hyperbola $xy=72$ and its asymptotes is
tnstate
class12
bookproblem
p277
objective
q120
asked
May 14, 2013
by
poojasapani_1
1
answer
The length of the latus rectum of the rectangular hyperbola $xy=32$ is
tnstate
class12
bookproblem
p277
objective
q119
modelpaper
mar-2008
mar-2010
asked
May 14, 2013
by
poojasapani_1
1
answer
One of the foci of the rectangular hyperbola $xy=18$ is
tnstate
class12
bookproblem
p277
objective
q118
modelpaper
mar-2006
asked
May 14, 2013
by
poojasapani_1
1
answer
Let X be a discrete random variable whose probability distribution is defined as follows:\[P(X=x)=\left \{\begin{array}{1 1}k(x+1) & for\;x=1,2,3,4\\2kx & for\;x=5,6,7\\0 & otherwise\end{array} \right.\]where k is a constant. Calculate\[(i)\;the\;value\;of\;k\quad(ii)\;E(X)\quad(iii)\;standard\;deviation\;of\;X\]
cbse
class12
ch13
q49
p277
exemplar
sec-c
difficult
math
asked
Jan 9, 2013
by
sreemathi.v
1
answer
An item is manufactured by three machines A,B and C.Out of the total number of items manufactured during a specified period,50% are manufactured on A,30% on B and 20% on C.2% of the items produced on A and 2% of items produced on B are defective,and 3% of these produced on C are defective.All the items are stored at one godown.One item is drawn at random and is found to be defective.What is the probability that it was manufactured on machine A?
cbse
class12
ch13
q48
p277
exemplar
sec-b
medium
math
asked
Jan 9, 2013
by
sreemathi.v
1
answer
By examining the chest X ray,the probability that TB is detected when a person is actually suffering is 0.99.The probability of an healthy person diagnosed to have TB Is 0.001.In a certain city,1 in 1000 people suffers from TB.A person is selected at random and is diagnosed to have TB.What is the probability that he actually has TB?
cbse
class12
ch13
q47
p277
exemplar
sec-b
medium
math
asked
Jan 9, 2013
by
sreemathi.v
1
answer
There are three urns containing 2 white and 3 black balls,3 white and 2 black balls,and 4 white and 1 black balls,respectively.There is an equal probability of each urn being chosen.A ball is drawn at random from the chosen urn and it is found to be white.find the probability that the ball drawn was from the second urn.
cbse
class12
ch13
q46
p277
exemplar
sec-a
medium
math
asked
Jan 9, 2013
by
sreemathi.v
1
answer
There are two bags,one of which contains 3 black and 4 white balls while the other contains 4 black and 3 white balls.A die is thrown.If it shows up 1 or 3,a ball is taken from the 1st bag,but it shows up any other number,a ball is chosen from the second bag.Find the probability of choosing a black ball.
cbse
class12
ch13
q45
p277
exemplar
math
sec-b
asked
Jan 9, 2013
by
sreemathi.v
1
answer
A letter is known to have come either from TATA NAGAR or from CALCUTTA.On the envelope,just two consecutive letter TA are visible.What is the probability that the letter came from TATA NAGAR.
cbse
class12
ch13
q44
p277
exemplar
math
sec-b
asked
Jan 9, 2013
by
sreemathi.v
2
answers
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