There are 20 balls in the urn, numbered from 1 to 20. What is the probability that a ball taken

There are 20 balls in the urn, numbered from 1 to 20. What is the probability that a ball taken at random from the urn will have an even number?

To find the probability of pulling a ball with an even number, we first find the total number of such numbers in the range from 1 to 20. These are the numbers 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20. There are 10 of them in total.

Then the probability of drawing an even-numbered ball is the ratio of the number of even-numbered balls to the total number of balls:

10:20 = 0.5.

Answer: the probability of drawing a ball with an even number is 0.5.