sagar

a man has one kind of coffee at 'a' paise per kg and another at 'b' paise per kg.how much of each must he take to form a mixture of (a-b)kg, which he can sell at 'c' paise per kg without loss.

1) if x+1/x=2,then x^2012+1/x^2012=? 2)if A>B>C>D,find the digits A,B,C,D (which are from1 to 9), so that ABCD-DCBA=BDAC. 3)solve:px-qy=r and rx-py=q.

Solve the system of equations for positive real numbers: 1/xy = x/z + 1, 1/yz = y/x + 1, 1/zx = z/y + 1.

A gaseous mixture containing 6 moles of oxygen, 8 moles of helium and 6 moles of carbon dioxide in a container under a pressure of 40 atm. Calculate the partial pressure of th3 individual gases.?

Amoeba captures food with the help of

three balls are drawn successively from a box containing 6 red balls,4white balls and 5 blue balls. find the probability that tare hey drawn in the order red,white and blue if each ball is replaced?

one bag contains 4 white balls,2 black balls.another bag contains 3 white balls 5 black balls.if one ball is drawn from each bag. find that a) both are white? b) both are black? c)one is white and one is black?

On any given day, mail gets delivered by either Alice or Bob. If Alice delivers it, which happens with probability 1/4, she does so at a time that is uniformly distributed between 9 and 11. If Bob delivers it, which happens with probability 3/4, he does s...

the earth rotates on an imaginary axis. true of false?

how does 2 came 1/p^2=p/p+1=2

one bag contains 4 white balls,2 black balls.another bag contains 3 white balls 5 black balls.if one ball is drawn from each bag. find that a) both are white? b) both are black? c)one is white and one is black?