If the pair of lines x - 16pxy - y2 = 0 and x2 - 16qxy - y = 0 are such that each pair bisects the angle between the other pair, then pq =
If a circle with radius 2.5 units passes through the points (2, 3) and (5, 7), then its centre is
(1 5, 2)
(7, 10)
(3, 4)
(3 5, 5)
D.
(3 5, 5)
(d) Let C(x, y)be the centre of circle
The circumcentre of the triangle formed by the points (1, 2, 3) (3, - 1, 5), (4, 0, - 3) is
(1, 1, 1)
(2, 2, 2)
(3, 3, 3)
A bag P contains 5 white marbles and 3 black marbles. Four marbles are drawn at random from P and are put in an empty bag Q. If a marble drawn at random from Q is found to be black then the probability that all the three black marbles in P are transfered to the bag Q