1. A box contains 1 dozen pens, 3 red pens, 4 green pens, and the rest are blue. The probability of randomly picking 3 pens and getting all colors is equal to which of the following? Along with the method.
1. In a box, there are a dozen pens, three red pens, four green pens, and the rest are blue, indicating the probability of randomly selecting pens. 3 handles, all colors equal to any of the following.
A box contains a dozen pens, a red pen, three green ones and four blue ones. The probability of randomly drawing three pens and then filling them with all colors is equal to any of the following.