top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

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

0 votes
263 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).

enter image description here

To 2 decimal places, what is the probability it strikes black?

posted Aug 1, 2017 by anonymous

Looking for solution? Promote on:
Facebook Share Button Twitter Share Button LinkedIn Share Button




Similar Puzzles
0 votes
Triangle ABC with random points on the circle. What is the probability of triangle covering the centre of the circle?

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?
enter image description here

+1 vote
What will be the ratio of the area of the bigger circle to that of the smaller circle in the following figure?

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?

enter image description here

0 votes
A bag contain 5 blue & 4 black balls. 3 balls are drawn at random, what is the probability of 2 are blue and 1 is black?

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

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?

0 votes
A box contains 4 red, 6 green & 8 black balls. 3 balls are drawn, find probability of all balls are of different color?

A box contains 4 red balls, 6 green and 8 black balls. Three balls are drawn at random find the probability that three balls are of different color?

...