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Recent questions tagged q2
Questions
If the letters of the word RACHIT are arranged in all possible ways as listed in dictionary.Then what is the rank of the word RACHIT?
cbse
math
class11
ch7
permutations-and-combinations
exercise7-3
exemplar
q2
sec-b
medium
asked
May 14, 2014
by
sreemathi.v
1
answer
How many words with or without meaning can be formed with letters of the word EQUATION at a time so that vowels and consonants occur together?
cbse
math
class11
bookproblem
ch7
permutations-and-combinations
misc
q2
sec-c
difficult
asked
May 14, 2014
by
sreemathi.v
1
answer
How many n-digit numbers are there with no digit repeated?
cbse
math
class11
bookproblem
ch7
permutations-and-combinations
exercise7-3
q2
sec-b
medium
asked
May 13, 2014
by
sreemathi.v
1
answer
Is $3!+4!=7!$
cbse
math
class11
bookproblem
ch7
permutations-and-combinations
exercise7-2
q2
sec-b
medium
asked
May 13, 2014
by
sreemathi.v
1
answer
How many 3-digit even numbers can be formed from the digits 1,2,3,4,5,6 if the digits can be repeated?
cbse
math
class11
bookproblem
ch7
permutations-and-combinations
exercise7-1
q2
sec-b
medium
asked
May 13, 2014
by
sreemathi.v
1
answer
Find the lengths of medians of the triangle $ABC$ where $A(0,0,6),\:B(0,4,0)\:and\:C(6,0,0)$
cbse
math
class11
ch12
introduction-to-3d-geometry
exercise12-misc
sec-c
easy
q2
asked
May 11, 2014
by
rvidyagovindarajan_1
1
answer
Given that $P(3,2,-4),\:Q(5,4,-6)\:\:and\:\:R(9,8,-10)$ are collinear. Find the ratio in which $Q$ divides $PR$
cbse
math
class11
ch12
introduction-to-3d-geometry
exercise12-3
sec-b
easy
q2
asked
May 6, 2014
by
rvidyagovindarajan_1
1
answer
Give an example of a statement $P(n)$ which is true for all $n $. Justify your answer.
cbse
class11
ch4
mathematical-induction
exemplar
q2
asked
May 5, 2014
by
thanvigandhi_1
0
answers
Prove that $2^n > n$ for all positive integers $n$.
cbse
class11
ch4
mathematical-induction
bookproblem
sec3
examples
q2
asked
May 2, 2014
by
thanvigandhi_1
1
answer
The function $f(x)$ is defined as follows : $f(x) = \left\{ \begin{array}{l l} x^2+ax+b & \quad 0 \leq x < 2 \\ 3x+2, & \quad 2 \leq x \leq 4 \\ 2ax+5b & \quad 4 < x \leq 8 \end{array} \right. $ If $f $ is continuous on $[0,8]$ find the values of a and b
cbse
class12
ch5
additionalproblem
q2
asked
May 1, 2014
by
meena.p
0
answers
Prove the following by using the principle of mathematical induction for all $n \in N $: \[\] $1^3+2^3+3^3+...+n^3= \bigg( \large\frac{n(n+1)}{2} \bigg)^2$
cbse
class11
ch4
mathematical-induction
bookproblem
sec3
exercise4.1
q2
asked
Apr 29, 2014
by
thanvigandhi_1
1
answer
If $\large\frac{2\sin \alpha}{1+\cos \alpha+\sin \alpha}$$=y$,then prove that $\large\frac{1-\cos \alpha+\sin \alpha}{1+\sin \alpha}$ is equal to $y$
cbse
math
class11
ch3
trigonometric-functions
exemplar
q2
sec-c
difficult
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Prove that $(\sin 3x+\sin x)\sin x+(\cos 3x-\cos x)\cos x=0$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q2
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Show that the points $(-2,3,5),\:(1,2,3)\:and\:(7,0,-1)$ are collinear.
cbse
class11
ch12
introduction-to-3d-geometry
bookproblem
exercise12-2
sec-b
easy
q2
asked
Apr 17, 2014
by
rvidyagovindarajan_1
1
answer
Find the principal and general solution for the equation $\sec x= 2$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
exercise3-4
q2
sec-c
difficult
asked
Apr 17, 2014
by
sreemathi.v
1
answer
Prove : $2\sin^2\large\frac{\pi}{6}+$$cosec ^2\large\frac{7\pi}{6}$$\cos^2\large\frac{\pi}{3}=\large\frac{3}{2}$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
exercise3-3
q2
sec-b
medium
asked
Apr 17, 2014
by
sreemathi.v
1
answer
Find the values of other five trignometric function $\sin x=\large\frac{3}{5}$,$x$ lies in the second quadrant
cbse
math
class11
ch3
trigonometric-functions
bookproblem
exercise3-2
q2
sec-b
medium
asked
Apr 16, 2014
by
sreemathi.v
1
answer
A point is is $XZ$ plane. What can you say about its $y$ coordinate?
cbse
class11
ch12
introduction-to-3d-geometry
bookproblem
exercise12-1
sec-a
easy
q2
asked
Apr 15, 2014
by
rvidyagovindarajan_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ): $x+a$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q2
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the coefficient of $a^5b^7$ in $ (a-2b)^{12}$
cl37661
cl37655
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q2
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Expand the expression: $\large(\frac{2}{x} - \frac{x}{2})$$^5$
easy
sec-a
cl37489
binomial-theorem
cbse
class11
math
ch8
exercise8-1
sec2
binomial-theorem-for-positive-integral-indices
q2
asked
Apr 9, 2014
by
balaji.thirumalai
1
answer
An arch is in the form of a parabola with its axis vertical. The arch is 10 m high and 5 m wide at the base. How wide is it 2 m from the vertex of the parabola?
cbse
class11
math
conic-sections
hyperbola
exercise11-misc
misc
sec-a
medium
q2
asked
Apr 8, 2014
by
balaji.thirumalai
1
answer
Find the coordinates of the foci and the vertices, the eccentricity and the length of the latus rectum of the hyperbola $\;\large\frac{y^2}{9}$$-\large\frac{x^2}{27}$$=1$
cl37053
cbse
class11
math
conic-sections
hyperbola
exercise11-4
sec4
easy
sec-a
q2
asked
Apr 8, 2014
by
balaji.thirumalai
1
answer
Find the derivative of $99x$ at $ x = 100$.
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
derivatives
exercise13-2
p312-313
q2
asked
Apr 7, 2014
by
thanvigandhi_1
1
answer
A conductor lies along the $z$-axis at $-1.5 \leq z \leq 1.5\;m $ and carries a fixed current of $10.0\;A$ in $-a_{z}$ direction (see figure). For a field $\bar{B}=3.0 \times 10^{-4} e^{-0.2x} \hat a_y\;T$. Find the power required to move the conductor at constant speed to $x = 2.0m, y = 0\;m\;in\; 5 \times 10–3\; s$. Assume parallel motion along the $x$-axis.
jeemain
jeemain-2014
physics
q2
medium
asked
Apr 7, 2014
by
meena.p
1
answer
Evaluate the following limits $\lim\limits_{x \to \pi} \bigg( x - \large\frac{22}{7} \bigg)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
limits
exercise13-1
p301-303
q2
asked
Apr 3, 2014
by
thanvigandhi_1
1
answer
Find the coordinates of the foci, the vertices, the length of the major axis, the minor axis, the eccentricity and the length of the latus rectum of the ellipse $\large\frac{x^2}{4}$$+\large\frac{y^2}{25}$$=1$
cl35304
math
cbse
class11
ch11
exercise11-3
conic-sections
ellipse
q2
easy
sec-b
asked
Apr 1, 2014
by
balaji.thirumalai
1
answer
Find the co-ordinates of the focus, axis of the parabola, equations of the directrix and length of latus rectum of the parabola $x^2=6y$
cl35276
cbse
class11
ch11
exercise11-2
parabola
conic-sections
easy
sec-a
q2
math
asked
Apr 1, 2014
by
balaji.thirumalai
1
answer
Find the co-ordinates of the focus, axis of the parabola, equations of the directrix and length of latus rectum of the parabola $x^2=6y$
cbse
class11
ch11
exercise11-2
parabola
conic-sections
easy
sec-a
q2
math
asked
Apr 1, 2014
by
balaji.thirumalai
1
answer
Find the equation of the circle with centre $(-2,3)$ and radius $4$.
cl35190
cbse
class11
ch11
exercise11-1
circle
conic-sections
q2
easy
sec-a
math
asked
Apr 1, 2014
by
balaji.thirumalai
1
answer
If the sum of three numbers in A.P. is $24$ and their product is $440$, then find the numbers.
cbse
class11
ch9
bookproblem
misc
easy
sec-b
q2
math
sequences-and-series
asked
Mar 28, 2014
by
rvidyagovindarajan_1
1
answer
The linkage which binds various amino acids in secondary structure of proteins is
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
easy
q2
asked
Mar 27, 2014
by
thanvigandhi_1
1
answer
Reaction of $R-CO-NH_2$ with a mixture of $Br_2$ and $KOH$ gives $R-NH_2$ as main product .The intermediate involved in the reaction are \[\] 1. $R-CO-NHBr$ \[\] 11 . $R-N =C=O$ \[\] 111. $R-NH-Br$ \[\] 1v. $H-CO-NBr_2$
jeemain
aipmt
chemistry
nitrogen
organic-chemistry
cbse
class12
unit13
q2
easy
asked
Mar 21, 2014
by
thanvigandhi_1
1
answer
Use elementary column operation $C_2\rightarrow C_2-2C_1$ in the matrix equation $\begin{bmatrix}4 & 2\\3 & 3\end{bmatrix}=\begin{bmatrix}1 & 2\\0 & 3\end{bmatrix}\:\begin{bmatrix}2 & 0\\1 & 1\end{bmatrix}$
cbse
modelpaper-2014
65-2-3
sec-a
q2
asked
Mar 20, 2014
by
rvidyagovindarajan_1
1
answer
By which of the following reactions is copper obtained?
jeemain
cbse
chemistry
class12
unit6
general-principals-and-processes-of-isolation-of-metals
q2
medium
asked
Mar 15, 2014
by
meena.p
1
answer
The heat of combustion of naphthalene $(C_{10}H_8(s))$ at constant volume was measured to be $-5133\: kJ/ mol$ at $298\: K$. Calculate the value of enthalpy change $(R = 8.314 \: J/Kmol)$
jeemain
physics
thermodynamics
cbse
class11
class12
q2
easy
asked
Mar 13, 2014
by
thanvigandhi_1
1
answer
Find the sum of $n$ terms of the series $(1\times 2\times 3)+(2\times 3\times 4)+(3\times 4\times 5)+.......$
cbse
class11
ch9
bookproblem
exercise9-4
medium
sec-c
q2
math
sequences-and-series
asked
Mar 7, 2014
by
rvidyagovindarajan_1
1
answer
Bakelite is ?
jeemain
aipmt
chemistry
cbse
unit5
class12
organic-chemistry
polymers
q2
easy
asked
Mar 5, 2014
by
thanvigandhi_1
1
answer
In the following compounds the order of basicity is
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q2
easy
asked
Feb 27, 2014
by
sreemathi.v
1
answer
Find the $12^{th}$ term of the $G.P.$ whose $8^{th}$ term is $192$ and common ratio=$2$
cbse
class11
ch9
bookproblem
exercise9-3
sec-a
easy
q2
math
sequences-and-series
asked
Feb 25, 2014
by
rvidyagovindarajan_1
1
answer
An isomer of ethanol is
jeemain
chemistry
class11
organic-chemistry
q2
easy
basic-organic-chemistry
ch12
asked
Feb 20, 2014
by
meena.p
1
answer
Find the sum of all the natural numbers lying between $100\:\: and\:\: 1000$ which are multiples of $5$
cbse
class11
ch9
bookproblem
exercise9-2
sec-b
q2
easy
math
sequences-and-series
asked
Feb 19, 2014
by
rvidyagovindarajan_1
1
answer
Which of the following compound is expected to have maximum enol content in ethanol?
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q2
easy
asked
Feb 18, 2014
by
sreemathi.v
1
answer
Find the first 5 terms of the sequence whose $n^{th}$ term is given by $t_n=\large\frac{n}{n+1}$
cbse
class11
bookproblem
ch9
exercise9-1
sec-a
q2
easy
math
sequences-and-series
asked
Feb 17, 2014
by
rvidyagovindarajan_1
1
answer
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