   See the given dartboard where each smaller circle has 3/4 redius of bigger circle. What is probability of hitting black?

81 views

The dartboard in the diagram consists of an infinite number of concentric circles. Each successively smaller circle has 3/4 the radius of the preceding, larger circle.

A dart is thrown somewhere on the dartboard (striking uniformly at random over the entire area of the dartboard). To 2 decimal places, what is the probability it strikes black? posted Aug 1, 2017
Looking for solution? Promote on:

Similar Puzzles

Triangle ABC is stuck in a circle. Its points are on random areas on the circumference of the circle. What is the probability of the triangle covering the centre of the circle? A bag contain 5 blue and 4 black balls. Three balls are drawn at random. What is the probability that 2 are blue and 1 is black.

+1 vote

A square is inscribed in a circle and a circle is inscribed in that square. What will be the ratio of the area of the bigger circle to that of the smaller circle? +1 vote

A bag contains 5 white, 4 red and 3 black balls. A ball is drawn at random from the bag, what is the probability that it is not black?