Don L. answered • 01/26/18

Tutor

5
(12)
Fifteen years teaching and tutoring basic math skills and algebra

Hi Nat, there are 12 blocks in the bag. The probability of drawing a red ball is 3/12, or 1/4. There are now 11 blocks in the bag. The probability of drawing a red ball is 2/11.

The probability of drawing the two red balls is: 1/4 * 2/11, or 1/22.

Questions?