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consider the A.P's 17,21,25...and 16,21,26.......Find the sum of first 100 common terms appearing in the two series. ...

If x,y,z are in H.P,prove that log(x+z)+log(x+z-2y)=2log(x-z). ...

Find three numbers in G.P such that their sum is 21 and the sum of their squares is 189. ...

The axis of a parabola is along the line y=x,and the distance of its vertex from origin is 2 and that from its frocus is 2 2 both lie in the first quadrant,then the equation of the parabola is _____ ...

Given 2s be the perimeter of a triangle,prove that trangle of greatest area is equilateral. ...

Formation of free radical is easiest in: a.CH3CH2Cl b.ch3ch2Br c. ch3ch2F d. ch3ch2I ...

the coefficient of x^59 in the expansion of the product (x-1)(x2-2)(x3-3)................(x^11-11) a)13 b)21 c)7 d)11 ...

If two unequal parabolas are having the same focus and axes in opposite directions, then the angle between them at their common point of intersection is a.45° b.30° c.60° d.90° ...

PL NOTE : I KNOW how to solve the following Question ............... My concern is the type : *Image* IN such Questions wat is the instinctive Substituition one MAKES or waat are the primary OBSERVATIONS/DEDUCTIONS/SUBSTITUIT ...

1.Two circles are constructed taking two sides of a triangle as diameter. What is the probability that these two circles intersect on third side of triangle? 2.In a MAMCQ test, der r 4 alternatives out of which 1 or more r co ...

The results are out please post your queries here only For others test is still open ...

*Image* Bhaiyyas and Sirs PLEASE let others try first. (Thank You) ...

*Image* ans pr ps qs s ...

Not a dbt....... nice concept : Find no of non-negatiove integral solution of a + b + c + 4d = 20 wer a,b,c,,d are whole nos. Does ne1 hav diff methd......... i did it by multinomial thrm ...

*Image* ...

*Image* i strugl in dis type. pl. help. ...

*Image* in d fig shown ABCD is a fixed smooth conducting frame in horizontal plane . T is a bulb of power 100 W. P is a smooth pulley OQ is a conducting rod neglect the self inductince of the loop and resis of any part other ...

a,b,c are 3 nos. such that 1 > a,b,c > 0 and a + b + c = 2 Then show that \frac{a}{(1-a)}\frac{b}{(1-b)}\frac{c}{(1-c)} ≥ 8 This may be very simple but I'm getting LHS ≤ 8 instead of ≥ 8 . I'm not able to find my ...

A conducting spherical shell of rad. R is placed concentrically inside another similar shell of rad. 2R. The inner shell has a charge Q. If it's connected to the outer shell by a coducting wire , find loss in elec.energy .... ...

does C2 exist( it does in vapour state ) now, does c4 exist?????? acc to me, they may / shud luk like this: *Image* ...

*Image* ans D ...

Take a 1,2 or 3 digit no and multiply it by 7*11*13 and see the result... :) Ex: 548*7*11*13=? After seeing the pattern u can just write the answer without calculating.. ...

two beakers are placed side by side in a sealed enclosure.the first beaker contains 100 mL of pure water,the other,an equal volume of aqueous solution of sugar.whjat will be the volumes of the liquids in the two beakers when ...

in an oswald walker experiment,dry air was first blown thru a solution containing solute(M=278) in 150 g of water and then also thru pure water.the loss in mass of water is 0.0827g while mass of water absorbed in sulphuric ac ...

well guys it's only testing your analytical skills partly and some chemistry skills . read the first passage carefully.and answer it's easy . yet gave. and second one organic is nice. try it . *Image* passage for 1st @ rom te ...

*Image* about that SIGMA 2PX ...nd where sigma 2pz went .. neway give detail explanations and another Q HETERO DIATOMIC MOLECULES for exapmle NO .. the orbital diagram that is taken is it with respect to oxygen i men the high ...

LIM ( x^n + n(x^(n+1)) + 1 ) / e^[x] x-->∞ [x] = GIF ...

\sum_{k=0}^{n}{f(x + ka)} = 0 is this functn periodic ?? if yes, fid its period ...

1.A young's double slit expt is performed with white light,then A)The central fringe will be white B)There will not be a completely dark fringe C)The fringe next to the central will be red D)The fringe next to the central wil ...

Two circular rings A and B each of radius a=30cm are placed coaxially with their axes horizontal in a uniform electric field E=10^5 N/C directed vertically upwards.distance between the centres of these rings A and B is h=40 c ...