Probability is the likelihood something will happen as opposed to another factor. If you were to toss a coin, the probability of it landing on heads is 1/2. If you toss it again, the probability of...
Count the total number of ways it can turn out. Count the number of ways that are the condition you're looking for. The probability of the outcome you're looking for is is the second number divided...
This will purely depend on the question, if you get a frequency chart, (containing only the frequency and how often this was brought, take, etc depending on the question,) add up the frequency one by...