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If grad of one line of equation x2+kxy+2y2=0 is double of other, h =
In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?
A purse contains 4 copper coins and 3 silver coins, the second purse contains 6 copper coins and 2 silver coins. A coin is taken out from any purse. The probability that it is a copper coin is
If the roots of the equation a/x - a + b/x - b = 1 are equal in magnitude and opposite in sign, then
The fourth, seventh and tenth terms of a G.P. are p, q and r respectively, then
Suppose that g (x) = 1 + √x and f (g(x)) = 3 + 2 √x + x, then f (x) is
The coordinates of foot of perpendicular from (2,3) to the line x+y+1=0 are
The equation of the tangent at the point P(t), where t is any parameter, to the parabola y2 = 4ax is
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