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dbt How many non-similar trinagles can be constructed whose vertices are vertices of a 1) 21-sided regular polygon? 2) regular n-gon ? PS - I don't know if this is the r8 forum for this, coz it may not be a JEE problem as suc ...

experts..tips on how to prepare for BITS!! ...

If x∩=(1+1/n)^n , n is a natural number. . . then prove that (1) x∩ is an increasing sequence . . . (2) Prove that 2<x∩<3. ...

Let a,b,c,x,y,z be reals and let A=ax+by+cz . Similarly B=ay+bz+cx & C=az+bx+cy . Given |A-B|\ge 1 , |B-C|\ge 1 & |C-A|\ge 1 . Find the minimum of (a^2+b^2+c^2)(x^2+y^2+z^2) . [54] ...

1) evaluate \sum_{r=1}^{667}\binom{2000}{3r-1} 2)evaluate \sum_{r=1}^{2008}r.r! 3)find \prod_{r=1}^{45}(1+\textup{tan} (\textup{r})) ...

Does COMEDK have questions from Class XI also?? VIT only had questions from Class XII.. ...

Is corrosion an electrochemical phenomena ??/ The IUPAC name of the compound with the structural formula CH3 - CH = CH - C *Image* CH is (A)pent-2-ene-4-yne (B)pent-1-yne-3-ene ...

A blackbody of temperature T is inside chamber of T0 temperature initially, Sun rays are allowed to fall from a hole in the top of chamber. If the temperature of blackbody (T) and chamberT0 remains constant, then which of the ...

A manometric fluid dibutyl phthalate has density 1.047x103 kg m-3. what pressure of this liquid of one mm height suggest? [ans. 0.077 torr] pls explian!!! ...

One mole of an ideal gas in initial state A undergoes a cyclic process ABCA as shown. Its pressure at A is Po. then (a) Internal energies at A and B are same (b) Work done by the gas in the process AB is PoVo ln4 (c) pressure ...

A magnetizing field of 1200 A/m produces a magnetic flux of 2.4 ? 10-5 weber in an iron bar of cross-sectional area 0.2 cm2. Calculate the permeability and susceptibility of the bar. ...

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1) A point source of light is placed at the centre of curvature of a hemispherical surface.the radius if curvature is r and the inner surface is completely reflecting.Find the force on the hemisphere due to the light falling ...

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(1)How many eletrons in Na( atomis no. 11) satisfy the equation: 2n+l=5m+s where n, l, m, s are the principle, azimuthal, magnetic and spin quantum no.s respectively. . (a)1 (b)5 (c)6 (d) none of these . . . . (2)Which of the ...

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In how many ways can n identical balls be distributed to nine persons A,B,C,D,E, F,G,H, I so that the number of balls recieved by A is the same as the total number of balls recieved by B,C,D,E together? As of yet, I haven't b ...

A lead bullet just melts when stopped by an obstacle. Assuming that 25 % of the heat is absorbed by the obstacle, find the speed of the bullet if its initial temperature is 27°C. (Melting point of lead=327°C, specific h ...

This one is a question someone asked me a few days back.. I guess it is from a ISI paper... (I may be wrong!) There is a matrix which is NxN Each element is filled with either 1 or -1 with an equal probability. What is the pr ...

given S = tan-1(1/3)+tan-1(1/5)+tan-1(1/7)+..........+tan-1(1/(2n-1)) if S = Î /4 find n ...

\int_{0}^{\frac{\pi}{2}} \frac{1+2cosx}{(2+cosx)^2} ...

asish mahapatra AIR-74 @ VITEEE! ...

*Image* 2.Assertion Reason I at room temp O exists as diatomic molecule whereas S is solid. II the catenated -O-O- chains are less stable as compared to doubly bonded O2 molecule. ii think both are right and II explains I cor ...

Let f(x)=(x2+4x)1/3 and let g(x) be an antiderivative of f(x). Then if g(5) = 7 find g(1) ...

x,y,z are real no such that 0<x,x,z<1 and x+y+z=2,then xyz/(1-x) (1-y) (1-z). can take value? ...

between elimination reaction and nucleophilic substitution reaction which one requires highest activation energy for the reaction to take to place?? and why?? ...

You can put down all your complaints.. errors on tests and anything that u dont like about this site.. on this thread. I will try to make it sticky so that it is always in the home page view! Or may be link this thread to ana ...

1) 4 5 6 2 3 7 1 8 3 21 98 ? what is the no in the place marked with "?" ...