first second toss: toss: 1 1 1 Answer:  X  =  or 1 chance in 4 tries 2 2 4Note: This answer of 1/4 is correct before you make the first toss. After you toss the coin once, and it comes up heads, the probability that the second toss will also come up heads is 1/2 because the first toss is in the past.
first second draw: draw: 4 3 12 1 Answer:  X  =  =  or 1 chance in 221 tries 52 51 2652 221Why is the probability of the second ace 3/51?
first second draw: draw: 4 4 16 1 Answer:  X  =  =  or 1 chance in 169 tries 52 52 2704 169Since 1/169 is larger than 1/221, this means you are more likely to get 2 aces in a row if you put your first ace back in the deck before you draw your second card. But you knew that!
Probabilities as percents: Sometimes probabilities are given as percentages. This is just changing the fraction we have been talking about into hundredths. So 1/2 becomes 50/100 or 50%. To change a fraction to a percent:
So, to convert a probability of 2/7 to a percent:
