![]() (We’ll show this physically through our solved example) one event’s outcome does not affect the other event’s outcome. ![]() In similarity to the events defined as in the Addition Rule, let us have two events namely A and B such that both are mutually independent of each other i.e. What is permutation? Learn here in detail. You can download Permutations and Combinations Cheat Sheet by clicking on the download button belowīrowse more Topics under Permutations And Combinations Thus there are 8 possible ways in which Jacob can buy a ball from the store, according to his specific wishes. Solution: n(Jacob buying a ball) = n(Jacob buys one ball from the amateur section) + n(Jacob buys one ball from the professional section) he can buy one ball from the amateur section OR one ball from the professional section? How many ways are possible in which he can buy a ball i.e. He wishes to choose one ball from the amateur section, which had a total of five balls or one ball from the professional section, which had a total of three balls. ![]() Question: Jacob goes to a shop to buy some ping pong balls. Let’s clarify our concepts with a suitable example. This is known as the Addition Rule of Counting. Then, the number of ways in which the event E can occur or the number of possible outcomes of the event E is given by: Let E be an event describing the situation in which either event A occurs, OR event B occurs. they have no outcome common to each other. Also, the events A and B are mutually exclusive events i.e. The number of ways in which event A can occur/the number of possible outcomes of event A is n(A) and similarly, for the event B, it is n(B).
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