standard deck of 52 cards, 2 Draws with No replacement
What is the probability of drawling to red cards, what is the probabilty of drwling at least one red card

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Using a standard deck of 52 cards, 2 draws without replacing the drawn card.
1. What is the probability of drawling two red cards.

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There are 26 red cards in the deck. So, the probability of the first card being red is 26/52 or 1/2. If the first card is red, then there are 25 red cards remaining in a deck of 51 cards. So, the probability of drawing a second red card is 25/51.

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Using a standard deck of 52 cards, 2 draws without replacing the drawn card.
2. What is the probabilty of drawing at least one red card

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To figure this out, you have to figure the probability of drawing NO red cards and subtract that from 1 (the total probability).

The probability of not drawing a red card the first time (i.e. drawing a black card) is 1/2 -- just like a red card. The probability of not drawing a red card (i.e. drawing a second black card) is 25/51, just like in the red case. The overall probability is the product of these two probabilities, just like in the red case.