Two flips can have four possible results:
T - T
T - H
H - T
H - H
The question defines 'success' as either H-T or T-H.
Two successes out of four possibilities = probability of 2/4 = 1/2 = 50% .
The probability is 1/2 because the second outcome has no affect on the first outcome.
For a normal coin, it is 0.5.
If the coin is fair, the probability is 1/4.
The probability of rolling a 2 on a die before flipping a heads on a coin is 1 in 12. The probability of rolling a 2 is 1 in 6. The probability of flipping heads is 1 in 2. Since these are sequentially unrelated events, you simply multiply the probabilities together.
The probability that the second coin matches the first is 0.5 .The probability that the third coin matches the first is 0.5 .The probability that the second and third coins both match the first is (0.5 x 0.5) = 0.25 = 25%
The probability is 1/2 because the second outcome has no affect on the first outcome.
The answer to the first question is 0.5. The answer to the second is not possible to work out.
The probability of flipping Heads on a coin is 1 - a certainty - if the coin is flipped often enough. On a single toss of a fair coin the probability is 1/2.
For a normal coin, it is 0.5.
If the coin is fair, the probability is 1/4.
The probability of flipping a coin 3 times and getting 3 heads is 1/2
The probability is 1. I have flipped a coin a lot more than 7 times.
The probability of rolling a 2 on a die before flipping a heads on a coin is 1 in 12. The probability of rolling a 2 is 1 in 6. The probability of flipping heads is 1 in 2. Since these are sequentially unrelated events, you simply multiply the probabilities together.
The probability of this is 50%. 2/4
There are 8 permutations of flipping a coin 3 times, or of flipping 3 coins one time. They are, with the permutations of two heads bolded...TTTTTHTHTTHHHTTHTHHHTHHH... thus, the probability of flipping a coin 3 times and getting 2 heads is 3 in 8, or 0.375.
1/2 if it is a fair coin
If it is a fir coin, the probability is (1/2)10 = 1/1024.