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A container contains two red, three yellow, and four green cards.
Two cards are selected at random, one after the other and without replacement, from the container.
Calculate the probability that the first card is red and the second card is green.
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For such simple problems, you should write the formula automatically.
The total number of cards is 2+3+4 = 9.
The desired probability is P = = = . ANSWER
Solved.
The formula is self-explanatory.