Question

A box contains 10 red balls, 12 blue balls and 15 yellow balls.
a.how many balls must we take out to be sure that we have at least 4 balls of the same color?\

Answer 1

You must take out 6 red, 8 blue, and 11 yellow. This is a total of 25 balls and would leave you with 4 of each color. Hope this helps!!

Answer 2

To get at least 4 balls that have the same color, we would need to pick out 31 balls.

How many balls can we pick out to have at least 4 balls?

We would need to pick at least all the balls of largest two colors and at least 4 balls from the least color in order to be sure that we would pick 4 balls of the same color.

The number of balls to pick is therefore:

= 15 + 12 + 4

= 31 balls

This ensures that we have a chance to pick at least 4 balls of the same color from yellow, red, or blue.

Find out more on selection probability at https://brainly.com/question/7153475.