I struggle with this section
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Answer:
9/20
Step-by-step explanation:
3 of the marbles are pink, and there are ten total. 3 out of 10 is 3/10. In the second event, if the first marble is placed back, the probabilities are the same, and picking a pink marble is still 3/10. 3/10 * 3/10 = 9/20.