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10 cards are numbered from 1 to 10 and placed in a box. One card is selected at random and is not replaced. Another card is then randomly selected. What is the probability of se…

10 cards are numbered from 1 to 10 and placed in a box. One card is selected at random and is not replaced. Another card is then randomly selected. What is the probability of se…
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4 votes
10 cards are numbered from 1 to 10 and placed in a box. One card is selected at random and is not replaced. Another card is then randomly selected. What is the probability of selecting two prime numbers?

asked
User Jon Gear
by
8.3k points

1 Answer

7 votes
1st attempt: 4/10
2nd attempt: 4/9, or 3/9 if one is already founded
answered
User Manoi
by
8.0k points
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