Two coins are in a hat. The coins look alike, but one coin is fair (with probability 1/2 of Heads), while the other coin is biased, with probability 1/4 of Heads. One of the coins is randomly pulled from the hat, without knowing which of the two it is. Call the chosen coin "Coin C". Coin c is tossed twice, showing heads both times. Given this information, what is the probability that coin c is the fair coin?

0.8 or 80%

Step-by-step explanation:

The probability that the fair coin was picked and then tossed twice showing heads both times is:

The probability that the biased coin was picked and then tossed twice showing heads both times is:

Therefore, the probability that the chosen coin is the fair coin is:

The probability is 0.8 or 80%

answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

step-by-step explanation:

2x^2+5x+17

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