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09 May, 2009

Bag and balls

There are 10 balls in this bag, 4 of them red and 6 blue. I am picking up one ball. Can you say whether it would be red or blue?
The ball drawn may be either red or blue. Since all the balls have an equal chance of being drawn, there is a 4 out of 10 chance that the ball drawn is red and a 6 out of 10 chance that the ball drawn is blue. The probability for the ball drawn to be red is 0.4

The probability for the ball drawn to be blue is 0.6

1 comment:

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