A. 3/10
B. 2/7
C. 5/7
D. 7/10
If P (A) =0.4, P (B) =0.5, P(C) =0.6, P (A∩B) =0.2, P (B∩C) =0.3, P (C∩A) =0.25, P (A∩B∩C) =0.1then P (AUBUC) =
The radical axis of the circles x2+y2-6x-4y-44=0 and x2+y2-14x-5y-24=0 is
Bag A contains4 white, 3black balls.Bag B contains 3 white and 5 black balls.One ball is drawn from each bag .The probability that both are black is
The radius of the sphere x2+y2+z2-2x+4y-6z+7=0 is
The distance of (1, -2) from the common chord of x2+y2-5x+4y-2=0 and x2+y2-2x+8y+3=0 is
If the probability for A to fail in one exam is 0.2 and that of B is 0.3, then the probability that either A or B fails is
If 5 biscuits are distributed among 6 children, the probability that a particular child gets 4 sweets is
Three students A,B,C are to take part in a swimming competition. The probabilities of A ‘s winning or the probability of B’s winning of B’s winning is 3 times the probability of C’s winning. The probability of the event of either B or C to win is
If the tangents to the parabola y2=4ax at (x1,y1) and (x2,y2) meet on the axis then
The distance of the point (1,2) from the common chord of the circles x2+y2-2x-6y-6=0 and x2+y2+6x-16=0 is