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i have a basic doubt. Isnt order of a chemical reaction determined only experimentally ? i mean can we find order just by looking the balanced chemical eqn ? i think it can only be found out from the eqn for elementary reacti ...
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find the time (to the nearest second) between 10:00 and 11:00 when the hours and the minutes hands of the clock are symmetric about the axis passing through 12:00 and 6:00 i forgot the options given! ...
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prove for all integral n, 2n >= 1 + n.2(n-1)/2 ...
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let ABC be a triangle with AB=AC=6. If the circumradius of the triangle equals 6, then BC equals: (a)25/3 (b)9 (c)48/5 (d)10 this is a sample question on the kvpy website. ...
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a,b,c are positive reals such that abc=1 prove *Image* ...
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show that n! < {(n+1)/2}^2 for n belonging to N ...
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if a and b are two integers such that 7 divides a2+b2, prove that 49 divides a2+b2. HINT: try using euclid's division algorithm i must admit if presently i were in class ix-x, i would not even know how to approach it! ...
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please suggest some good books for learning set theory ...
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*Image* the book says ans to part (b)is unanswerable but i am getting an answer ...
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*Image* what significance does the horizontal spacing in this question have?(i mean regular and irregular spacing) also please give the answer to part c with explanantion. ...
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here's a nice one i came across while reading a book yesterday prove for all positive integers m, the integer next greater than (\sqrt{3}+1)^{2m} contains 2^{m+1} as a factor ...
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prove (\frac{1}{2})(\frac{3}{4})(\frac{5}{6})..........(\frac{999999}{1000000}) < \frac{1}{1000} ...
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given \frac{x}{b+c-a}= \frac{y}{c+a-b} = \frac{z}{a+b-c} prove that \frac{x(y+z)+y(z+x)+z(x+y)}{2(ax+by+cz)}= \frac{x+y+z}{a+b+c} ...
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let a,b,c,d be real nubers each greater than 1. prove that 8(abcd+1) > (a+1)(b+1)(c+1)(d+1) ...
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Lets say you are in a gameshow. There are 3 doors in front of you, lets call them A, B and C. One of the doors has the prize money you are after. The remaining 2 doors have nothing behind them. You pick DOOR A.Now the game ho ...
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I tore several successive pages out of a book. The number of the first page I tore was 183 while the number of the last page was written with the same digits in some order. How many pages did I tear out of the book? ...
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here's a simple one prove that a number with 3^m equal digits is divisible by 3^m ...
