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Who is giving BT part test on 25th?? ...

There are 10 points in a plane of which no three are collinear and 4 points are concyclic.Find the number of different circles that can be drawn through atleast 3 of these points.. Kindly explain also.. ...

There are n concurrent lines and another line parallel to one of them.Find the number of different triangles that will be formed by the (n+1) lines.. ...

\int_{-1}^{0}{\int_{-\sqrt{1-x^{2}}}^{0}{\frac{2}{1+\sqrt{x^{2}+y^{2}}}}}dydx ...

An ingenious example of speech and politics occurred recently in the United Nations Assembly that made the world community smile. A representative from India began: 'Before beginning my talk I want to tell you something about ...

Compare the ond angles between H2O,OF2, and Cl2O. Justify Your Answer. ...

There are n people at a party. Prove that there are two of them such that of the remaining n − 2 people, there are at least \left[\frac{n}{2} \right]-1 of them each of whom knows both or else knows neither of the two. [ .] ...

Which of the following shapes is better for a blade to float? *Image* Note: This is my own question.. I have an opinion and an answer.. But your answers are most welcome... I want to see this one more as a discussion than as ...

*Image* best way for this transformation ? ...

prove 3^{n}>n^{3} for all positive integers `n`. note: open for all ...

*Image* ...

Statement 1 : A cloth covers a table.Some dishes are kept on it.The cloth can be pulled out without dislodging the dishes from the table. Statement 2 : For every action there is an equal and opposite reaction. Is it practical ...

(D.C. Pandey........) A circular tube of mass M is placed vertically on a horizontal surface as shown in the figure. Two small spheres, each of mass m, just fit in the tube are released from the top. Find M/m if the tube just ...

in a book there is some formula if f(x+y)=f(x)+f(y) then f(x)=xf(1).how does this come?? ...

Why can we hear but not see around a corner? (Means around the wall) ...

Let A=\left( \begin{array}{cc} a & b \\ 0 & a \end{array} \right) , by judging from A^2,\ A^3,\ \cdots to expect An for every positive integer n, then prove that the expectation is true by induction. Src: 1976 Hitotsubashi Un ...

Two sticks, each of mass m and length l, are connected by a hinge at their top ends. They each make an angle theta with the vertical. A massless string connects the bottom of the left stick to the right stick, perpendicularly ...

Q) A very flexible uniform chain of mass M and length L is suspended vertically so that its lower end just touches the surface of a table.When the upper end of the chain is released, it falls with each link coming to rest the ...

The two ends of a heavy rope of weight W are tied to two hooks A and B on opposite walls. The hooks are tied at the same horizontal level. If the rope makes angle θ with the walls at A and B, the tension T at the midpoint of ...

http://timesofindia.indiatimes.com/india/Sibal-moots-80-marks-must-in-Class-XII-for-IIT-aspirants/articleshow/5139382.cms NEW DELHI: Opening a new front, HRD minister Kapil Sibal on Monday wanted more weightage to be given to ...

This is another question from Larson's book.. .(Today I have given 2-3 from it) I_n=\int_{0}^{\pi/2}{\sin^nx dx} Show that I_{2n}=\frac{1.3.5....(2n-1)}{2.4.6....2n}\times \frac{\pi}{2} and I_{2n+1}=\frac{2.4.6....(2n-2)}{1.3 ...

*Image* The resistance of all the wires b/w any two adjacent dots is R. Then Find the equivalent resistance b/w A and B as shown in the figure. ...

A hydrocarbon X of the formula C6H12 does not react with bromine water but react with bromine in presence of light, forming compound Y on treatment with alc. KOH gives compound Z which on ozonolysis gives T of the formula C6H ...

well......"bunty" is my nick name. there are many solved problems.so understand correctly that which is my problem, so i write "bantyr chemistry". ok......... ...

Prove that: \begin{vmatrix}\frac{1}{p+1}&\frac{1}{p+2}&\ldots &\frac{1}{p+n}\\ \frac{1}{p+2}&\frac{1}{p+3}&\ldots &\frac{1}{p+n+1}\\ \vdots &\vdots &\ddots &\vdots\\ \frac{1}{p+n}&\frac{1}{p+n+1}&\ldots &\frac{1}{p+2n-1}\end{ ...

find the number of solutions : x^{2}+4x+1=\sqrt{x+3}-2 ...

There's a square ABCD.....inscribed in a circle, this square is now partitioned into non-overlapping rectangles, and for each rectangle it's circum-circle is drawn. If the sum of areas of all these circles equals the area of ...

minimize x4+ 1/x4 +x2+ 1/x2+ x+ 1/x+ x3+ 1/x3 +1 ...

*Image* ax= F/2m ( x/√l2-x2 ) ...

sir,can you please tell me that how shall i write in key board "Sn"?(n is under s) (this is from A.P,G.P) ...