The opposite of getting at most two heads is getting three heads. The probability of getting three heads is (1/2)^2, which is 1/8. The probability of getting at most two heads is then 1 - 1/8 which is 7/8.
The conditional probability is 1/4.
1/4
There are two sides to the coin, so the probability of getting heads or tails on one flip of the coin is 1/2 or 50%.
In two tosses: 1/4.
The opposite of getting at most two heads is getting three heads. The probability of getting three heads is (1/2)^2, which is 1/8. The probability of getting at most two heads is then 1 - 1/8 which is 7/8.
The probability of tossing two heads in two coins is 0.25.
The probability is 25%. The probability of flipping a coin once and getting heads is 50%. In your example, you get heads twice -- over the course of 2 flips. So there are two 50% probabilities that you need to combine to get the probability for getting two heads in two flips. So turn 50% into a decimal --> 0.5 Multiply the two 50% probabilities together --> 0.5 x 0.5 = 0.25. Therefore, 0.25 or 25% is the probability of flipping a coin twice and getting heads both times.
The conditional probability is 1/4.
The probability of this is 50%. 2/4
1/4
There are two sides to the coin, so the probability of getting heads or tails on one flip of the coin is 1/2 or 50%.
The probability of getting all heads is 1/24 = 1/16 The probability of getting all tails is also 1/24 = 1/16 The probability of all heads or all tails is the sum of the two = 1/8
In two tosses: 1/4.
1/4
33%
1:4