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18) Let xyz = 150 x,y,z belong to N. Then number of ordered triplets (x,y,z) satisfying the given equation is (A) 27 (B) 15 (C) 6 (D) None of these Ans given A i got D ...

I am starting a poll of our users for the best coaching institutes for IIT JEE for the users to take note of. (Also Includes Private teachers) Please Suggest the ones for the following cities (To be included in the list) Delh ...

For any complex number z, the minimum value of | z | + | z – 1 | is (A) 0 (B) 1 (C) 2 (D) –1 ...

plz suggest me a good book on organic chemistry with lots of questions...i feel this is the topic where i hav a lot of scope to improve!!! ...

It's pretty well known that physics is my weak point...so I hope people wouldn't mind if I needed help in some basic problems. Besides, this isn't my homework either :P...been there done that LOL. Q1. Three links are hinged t ...

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a function f(x) satisfies f(1)=3600 and f(1)+f(2)............f(n)=n2f(n) for all +ve integers n>1 find f(9) ...

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A belt is fit around the equator. Suppose it was 1 meter extra in length, and it was lifted till it was no longer slack. How high above the Earth's surface would you then be? A diagram is made here: *Image* Assume: Earth is s ...

if a,b and c are unit vectors, then *Image* does not exceed? ...

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Find all positive solutions to the following Diophantine equation ------ a 4 + b 4 + c 4 + d 4 + e 4 + f 4 + g 4 + h 4 = 26959 . ...

The co-ordinates of the foot of the perpendicular from (0, 0) upon the line x + y = 2 are (A) (2, –1) (B) (–2, 1) (C) (1, 1) (D) (1, 2) ...

If A is a square matrix then, (A) A + AT is symmetric (B) AAT is skew - symmetric (C) AT + A is skew-symmetric(D) ATA is skew symmetric ...

The angle between the lines joining the foci of an ellipse to one particular extremity of the minor axis is 90º. The eccentricity of the ellipse is ...

SHOW THAT a12- b12 IS DIVISIBLE BY 91 ,IF a AND b ARE BOTH PRIME TO 91 ...

In what way can you convert (CH3)3N to (CH3)2NH? Not a doubt. Try...and later I'll mention the direct method. ...

*Image* PLEASE EXPLAIN THE MECANISM CLEARLY... ...

A train moving with constant acceleration takes t seconds to pass a certain fixed point and the front and back end of the train pass the fixed point with velocities u and v respectively. Show that the length of the trai is (u ...

Find the values of ‘a’ for which the expression x2 – (3a – 1)x + 2a2 + 2a – 11 is always positve. ...

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A particle of mass m is tied to an inextensible massless string of length l whose other end is fixed, is projected vertically up with a velocity u0=√kgl at t=0 such that string being just taut and making an angle 60° with ...

Find the sum of the first n terms of the series 0.2 + 0.22 + 0.222 + .......... ...

Using binomial theorem, the value of (0.999)3 correct to 3 decimal places is (A) 0.999 (B) 0.998 (C) 0.997 (D) 0.995 ...

If a, b, c are real, then both the roots of the equation (x – b) (x – c) + (x – c) (x – a) + (x – a) (x – b) = 0 are always (A) positive (B) negative (C) real (D) imaginary ...

A line through the point A (2, 0) which makes an angle of 30º with the positive direction of x-axis is rotated about A in clockwise direction through an angle 15º. Then the equation of the straight line in the new position ...

because of the great tendency of neopentyl carbocation to rearrange neopentyl chloride cannot be made from neopentyl alcohol... how would u prepare neopentyl chloride from alcohol? ...

If the rate of increase of the radius of a circle is 5 cm/.sec., then the rate of increase of its area, when the radius is 20 cm, will be (A) 10Ï€ (B) 20Ï€ (C) 200Ï€ (D) 400Ï€ ...