Probability is the maths of chance. A probability is a number that tells you how likely (probable) something is to happen. Probabilities can be written as fractions, decimals or percentages.
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FACTS AND FORMULAE FOR PROBABILITY QUESTIONS. 1. Experiment: An operation which can produce some well-defined outcomes is called an experiment. 2. Random Experiment :An experiment in which all possible outcomes are know and the exact output cannot be predicted in advance, is called a random experiment. Ex: i. Tossing a fair coin. ii. Rolling an unbiased dice.
Worksheet: Mutually Exclusive Events In this worksheet, we will practice identifying mutually exclusive events and finding their probabilities. Q1: A bag contains 41 balls. There are 28 red balls which are numbered 1 to 28 and 13 white balls which are numbered 29 to 41. If a ball is chosen from the bag at random, what is the probability of the ball being red and having an even number? A 2 8 4.
Analyzing event probability for independence (Opens a modal) Practice. Calculating conditional probability Get 3 of 4 questions to level up! Dependent and independent events Get 3 of 4 questions to level up! Quiz 3. Level up on the above skills and collect up to 700 Mastery points Start quiz. Up next for you: Unit test. Level up on all the skills in this unit and collect up to 1600 Mastery.
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Finding probability Think about a fair ordinary dice. To find the probability of rolling a 4, take the number of possible ways of rolling a 4 and divide it by the total number of possible outcomes.