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Recent questions tagged q48
Questions
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
True or False: The equation of aline,which is parallel to $2\hat i\;-\hat j\;+\hat 3k$ and which passes through the point (5,-2,4) is $\Large \frac{x-5}{2}\;=\frac{y-2}{-1}\;=\frac{z-4}{3}.$
cbse
class12
ch11
q48
p240
true-or-false
exemplar
easy
sec-a
math
asked
Jan 7, 2013
by
sreemathi.v
1
answer
Find $\large \frac{dy}{dx}$ of the function expressed in parametric form $x=\large\frac{1+log t}{t^2},$$y=\large\frac{3+2log t}{t}$
cbse
class12
ch5
q48
p110
short-answer
exemplar
sec-b
medium
math
asked
Dec 31, 2012
by
sreemathi.v
1
answer
True or False: $(A^3)^{-1}=(A^{-1})^3$,where A is a square matrix and $|\;A\;|\neq 0$
cbse
class12
ch4
sec-a
q48
p84
true-or-false
exemplar
easy
math
asked
Dec 28, 2012
by
sreemathi.v
1
answer
If A,B are square matrices of same order and B is a skew-symmetric matrix,show that A'BA is skew symmetric.
cbse
class12
ch3
q48
p58
short-answer
exemplar
easy
sec-b
math
asked
Dec 23, 2012
by
sreemathi.v
1
answer
The value of $\cot^{-1}(-x)$ for all $x\;\in\;R$ in terms of $\cot^{-1}x$ is ____________.
cbse
class12
ch2
q48
p40
fitb
exemplar
easy
sec-a
math
asked
Dec 21, 2012
by
sreemathi.v
1
answer
Let the relation R be defined in N by aRb if 2a+3b=30.Then R=___________________
cbse
class12
ch1
q48
p16
fitb
exemplar
math
sec-a
asked
Dec 19, 2012
by
sreemathi.v
1
answer
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