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Recent questions tagged q31
Questions
A factory produces bulbs,The probability that any one bulb is defective is $\Large \frac{1}{50}$ and they are packed in boxes of 10.From a single box,find the probability that\begin{array}{1 1}(i)\;none\;of\;the\;bulbs\;is \;defective.\\(ii)\;exactly\;two\;bulbs\;are\;defective\\(iii)\;more\;than\;8\;bulbs\;work\;properly\end{array}
cbse
class12
ch13
q31
p275
short-answer
exemplar
sec-a
easy
math
asked
Jan 9, 2013
by
sreemathi.v
1
answer
The distance of the plane $\overrightarrow{r}.\bigg(\frac{2}{7}\hat i+\frac{3}{7}\hat j-\frac{6}{7}\hat k\bigg)$=1 from the origin is
cbse
class12
ch11
q31
p238
objective
exemplar
easy
sec-a
math
asked
Jan 4, 2013
by
sreemathi.v
1
answer
Differentiate the following w.r.t $x$ : $\cos\bigg(\tan\sqrt {x+1}\bigg)$.
cbse
class12
ch5
q31
p109
short-answer
exemplar
sec-a
medium
math
asked
Dec 31, 2012
by
sreemathi.v
1
answer
The maximum value of $\begin{vmatrix}1 & 1 & 1\\1 & 1-sin\theta & 1\\1-\cos\theta & 1 & 1\end{vmatrix}\;(is\;\theta\; is\; real\;number)$
cbse
class12
ch4
sec-a
q31
p81
objective
exemplar
easy
math
asked
Dec 27, 2012
by
sreemathi.v
1
answer
Show that if A and B are square matrices such that AB=BA,then\[(A+B)^2=A^2+2AB+B^2\]
cbse
class12
ch3
q31
p56
short-answer
exemplar
sec-a
easy
math
asked
Dec 22, 2012
by
sreemathi.v
1
answer
A man and his wife appear for an interview for two posts. The probability of husband’s selection is \( \frac{1}{7} \) and that of the wife’s selection is \( \frac{1}{5} \) . Find the probability that only one of them will be selected.
cbse
class12
modelpaper
2012
sec-b
q31
math
asked
Dec 22, 2012
by
thanvigandhi_1
1
answer
If $\sin^{-1}\frac{2a}{1+a^2} +\cos^{-1}\frac{1-a^2}{1+a^2}=\tan^{-1}\frac{2x}{1-x^2},where\; a,x,\in\;[0,1],$then the value of x is
cbse
class12
ch2
q31
p38
objective
exemplar
medium
sec-b
math
asked
Dec 21, 2012
by
sreemathi.v
1
answer
If a relation R on the set (1,2,3) be defined by R={(1,2)}, then R is
cbse
class12
ch1
q31
p14
objective
exemplar
sec-b
math
asked
Dec 19, 2012
by
sreemathi.v
1
answer
Integrate the function $\frac{\sin x}{(1+\cos x)^2}$
cbse
class12
bookproblem
ch7
sec2
q31
p305
sec-a
easy
math
asked
Dec 5, 2012
by
sreemathi.v
1
answer
Evaluate the definite integrals\[\int\limits_0^\frac{\pi}{2}\sin 2x\tan^{-1}(sin x)\;dx\]
cbse
class12
bookproblem
ch7
misc
q31
p353
sec-b
difficult
math
asked
Dec 2, 2012
by
sreemathi.v
1
answer
Show that the function defined by \( f (x) = cos (x^2) \) is a continuous function.
cbse
class12
bookproblem
ch5
sec1
q31
p160
sec-b
easy
math
asked
Nov 6, 2012
by
thanvigandhi_1
1
answer
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