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if the prob of horse p winning a race is 1/ 4 and that of horse Q winning the race is 1/ 6 find the prob that none will win ...

I think many of the JEE aspirants fear inequalities a lot so a very simple one. It uses only AM GM inequality That too only once! \frac{a}{b+c}+\frac{b}{c+a}+\frac{c}{a+b}\geq 3/2 Just give it a try .... Think for just a bit ...

a bag contains 5 black and 3 red balls a ball is taken out of the bag and is not returned then wat is the prob of drawing a red ball in the second draw if the ball in first draw is red please explain me the solution in detail ...

Just a simple question for all... if x and y are two complex roots of Zn=1 then what is the condition on "n" that Arg(x/y)=pi/2 has a possiblity? (n is an integer!) ...

A worm is crawling on an elastic band that is 20 inches long. Eachday the worm crawls 1 inch. Each evening, a boy stretches the band 10 inches (moving the worm some too). Does the worm ever reach the end of the band? If so, h ...

consider seven digit numbers x1 x2 .... x7 ≠0 having the prop that x4 is the greatest digit and the digit to left and right of x4 are in decreasing order then total number of such numbers in which all the digits are distinc ...

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Q1. The electric field and electric potential at a point are E and V respectively. (a) If E=0, V must be 0 (b) If V=0, E must be 0 (c) If E≠0, V cannot be zero (d) If V≠0, E cannot be zero. Q2. The electric potential decr ...

Q1. HCV example 18.... given: dipole moment = 3.4*10-30C-m... separation = 10-10m .. find mag. of charge.. simple q = D/d = 3.4*10-20C doubt is how can q have charge less than proton ? Q2. A positive charge q is placed in fro ...

1)FInd area bounded by mod(y)=e-mod(x) with [mod(x)+mod(y)]/2 + [mod(x)-mod(y)]/2 ≤2 2)Find area of region at point P satisfying maximum{PA+PB,PB+PC}<2 where A=(1/2 ,0) ,B=(3/2 , 0) ,C=(5/2 , 0) ...

x{x} = 1 ...

a square matrix A is said to be an idempotent matrix if A2=A. now answer the following questions: 8.) if A is a non-singular idempotent matrix, then a) A=IN b) A=0 C) A+A'=0 D) none of these. [cont....] ...

ACETOXIME + aq.KOH -------> ??? ...

Suppose we need to solve the equation x^{x^{x^{x^{.^{.^{.^{.}}}}}}}=2 The usual trick is to realize that the exponent of the bottom x is same the entire LHS, and so we get x^2=2\qquad \Rightarrow \ x=\sqrt{2} That is to say t ...

S-I for the particles having same K>E the de-broglie wavelength is directly proportional to the velocity S-II de broglie concept has significance only for microscopic particles ...

wat is d diff bw simple and alternating axis of symmetry.....????? ...

A circuit consists of a permanent source of emf E,a resistor R and a capacitance C connected in series.At t=0,the capacitance of capacitor jumprised abruptly by factor n.Find current in circuit as function of time (Internal r ...

how to check if 144255 + 192255 is divisible by 49 or not ...

S=1-1+1-1+1-1....................... infinity now thus, S=1- (1-1+1-1+1-1....................... infinity) thus S=1-S thus 2S=1 S=1/2 ...

2 different non parallel lines meet the circle |z|=r in the points a,b and c,d respectively,Then the point of intersection of the lines z=(a-1+b-1-c-1-d-1)/(a-1b-1-c-1d-1) Is the above statement true or false??? Edit:non para ...

i was integrating (tan-1x)2............and i am stuck here..... HOW do we integrate t.tant??? ie ∫t.tantdt..........plzzzzz help ...

find d value of p such there exists only 1 soln.... |logmx|=px ...

if f(x) =x+√2αsinx,x<pi/4 f(x)= 2xcotx - β x≥pi/4 is a continuous function,then (1+tanα)(1+tanβ) =? a)1 b)-1 c)2 d) -2 pls explain in detail........ ...

An indirectly heated filament is radiating maximum energy of wavelength 2.16*10-5cm Find the net amount of heat energy lost per second per unit area. the temperature of surrounding air is 13°C .Assuming it as black body .Giv ...

n-butane is produced by the monobromination of ethane followed by wurtz rxn, calculate the volume of ethane in litres at ntp to produce 55 gm of n butane if bromination takes place with 90%yield and the wurtz rxn with 85%yiel ...

Find the limit to: *Image* A.)1 B.)-1 C.)0 D.)Do not exist ...

is it worth attending the brilliants special intensiv course prog from 25th to 3 rd...??? ...

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A cube of mass of side a is dipped in water through a spring. At equilibrium , half the cube isimmersed in water The density of the cube is ρ, while that of water is 1 the spring constant is k Is this a SHM. Find the time pe ...

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