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Jimmy R.
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There is a standard deck of cards ($52$) with four suits; hearts, diamonds, clubs and spades. What is the probability that you draw at most one ace in two draws? $--------------------------------------$

There is a standard deck of cards ($52$) with four suits; hearts, diamonds, clubs and spades. What is the probability that you draw at most one ace in two draws?

I'm not entirely sure if this approach is correct or not.

  Firstly, the probability of drawing two aces (A) is,

$$P(A\cap A) = (A^{2nd}|A^{1st}) \times P(A^{1st})$$$$P(A\cap A) = \left(A^{2nd}\mid A^{1st}\right) \times P\left(A^{1st}\right)$$

Therefore, the probability of at most one ace (A)$(A)$ is given by,

$$P(\text{at most one}) = 1 - P(\text{at least two})$$

But since we are drawing exactly two cards, the probability of at least two aces is the same as the probability of two aces.

  So,

$$P(\text{at most one})= 1 - P(\text{at least two}) = 1- (\frac{4}{52}\times\frac{3}{51}) = \frac{660}{663} = \frac{220}{221}$$$$P(\text{at most one})= 1 - P(\text{at least two}) = 1-\left(\frac{4}{52}\times\frac{3}{51}\right) = \frac{660}{663} = \frac{220}{221}$$

Is the approach correct?

There is a standard deck of cards ($52$) with four suits; hearts, diamonds, clubs and spades. What is the probability that you draw at most one ace in two draws? $--------------------------------------$

I'm not entirely sure if this approach is correct or not.

  Firstly, the probability of drawing two aces (A) is,

$$P(A\cap A) = (A^{2nd}|A^{1st}) \times P(A^{1st})$$

Therefore, the probability of at most one ace (A) is given by,

$$P(\text{at most one}) = 1 - P(\text{at least two})$$

But since we are drawing exactly two cards, the probability of at least two aces is the same as the probability of two aces.

  So,

$$P(\text{at most one})= 1 - P(\text{at least two}) = 1- (\frac{4}{52}\times\frac{3}{51}) = \frac{660}{663} = \frac{220}{221}$$

Is the approach correct?

There is a standard deck of cards ($52$) with four suits; hearts, diamonds, clubs and spades. What is the probability that you draw at most one ace in two draws?

I'm not entirely sure if this approach is correct or not. Firstly, the probability of drawing two aces (A) is,

$$P(A\cap A) = \left(A^{2nd}\mid A^{1st}\right) \times P\left(A^{1st}\right)$$

Therefore, the probability of at most one ace $(A)$ is given by,

$$P(\text{at most one}) = 1 - P(\text{at least two})$$

But since we are drawing exactly two cards, the probability of at least two aces is the same as the probability of two aces. So,

$$P(\text{at most one})= 1 - P(\text{at least two}) = 1-\left(\frac{4}{52}\times\frac{3}{51}\right) = \frac{660}{663} = \frac{220}{221}$$

Is the approach correct?

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Retty
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Finding the Probability of Drawing at Most One Ace in Two Draws?

There is a standard deck of cards ($52$) with four suits; hearts, diamonds, clubs and spades. What is the probability that you draw at most one ace in two draws? $--------------------------------------$

I'm not entirely sure if this approach is correct or not.

Firstly, the probability of drawing two aces (A) is,

$$P(A\cap A) = (A^{2nd}|A^{1st}) \times P(A^{1st})$$

Therefore, the probability of at most one ace (A) is given by,

$$P(\text{at most one}) = 1 - P(\text{at least two})$$

But since we are drawing exactly two cards, the probability of at least two aces is the same as the probability of two aces.

So,

$$P(\text{at most one})= 1 - P(\text{at least two}) = 1- (\frac{4}{52}\times\frac{3}{51}) = \frac{660}{663} = \frac{220}{221}$$

Is the approach correct?