![]() ![]() ![]() We cannot imagine a scenario, where he wears just a shirt OR just a trouser.įrom the above cases, we can see that he has 6 different options for wearing a shirt and a trouser. The AND here emphasizes on the fact that Joe has to wear both shirt AND trousers at the same time! Notice how I have used the word AND after each and every case. He can wear Black shirt AND Blue Trousers He can wear Black shirt AND Brown TrousersĦ. He can wear Green shirt AND Blue Trousersĥ. He can wear Green shirt AND Brown TrousersĤ. He can wear Red Shirt AND Blue Trousersģ. He can wear Red Shirt AND Brown TrousersĢ. When to Multiply – Usage of Keyword “AND”Īssuming that he has red, green, and a black shirt, and he has brown and blue trousers, let us list down all the possible options that he has.ġ. Therefore, total possible cases = 3 OR 2 = 3 + 2 = 5ġ- Whenever we come across a situation involving 2 or more events, and occurrence of one event does not affect the occurrence of the other event, i.e., both of the events cannot occur simultaneously, then, in that case, we will simply add up all the events!Ģ- Look for the word OR in the question while figuring out what you need to find out and if OR is present then that means you need to add up the events.Total possible cases for Amy = She will wear shoes OR she will wear Sandals.Whenever we have a situation in which two events cannot occur simultaneously, we simply add all the cases. ěy event I mean, Amy cannot wear Shoe, and Sandal together. ![]() O Since the word OR is used here, we can conclude that both the events cannot happen together. O In this case, we need to find the number of ways in which she can wear a shoe OR a sandal. While looking for the keyword, focus on what we need to find out. Whenever you read a question, look for the keyword OR or AND.O Notice the OR that I have highlighted in this question. In how many ways can she decide what to wear? Whenever she goes out, she likes to wear either a shoe OR a sandal. Amy has 3 different types of shoes and 2 different types of sandals.Now let us use the keyword approach (OR) to solve this question easily! Thus, the answer, in this case, will be 5. The OR here emphasizes on the fact that Amy does not have the option to wear two different kinds of things at the same time! She needs to choose only 1 of these. Notice how we have used the word OR after each and every case. Let us focus on Amy’s situation first, and then we will come to Joe.Īssuming that she has red, green, and black shoes, and she has brown and blue sandals, let us list down all the possible options that she has. The only difference is that Amy will choose either shoes OR sandals to wear and in the second case Joe is going to choose both a shirt AND a trouser. In both these cases, the numbers are the same. In how many ways can he decide what to wear? Whenever he goes out, he likes to wear a shirt and a trouser. Joe has 3 different types of shirts and 2 different types of trousers.Whenever she goes out, she likes to wear either a shoe or a sandal. Let’s understand what I am trying to say with the help of two questions! While solving any P and C question, the most frequent confusion that students have is: “ Do I need to add up all the cases or do I need to multiply all the cases?” ![]() Help you to solidify the understanding of the above two keywords and at the end of the article, we will also provide you a few practice questions to test your understanding. If the answer to any of the above questions is yes, then in this e-GMAT article you will learn how to get rid of the confusion by using “AND” & “OR” on these questions.ġ.ĝive into the details of the application of “AND” & “OR” in permutation and combination.Ģ.ĝiscuss the attributes that AND – OR present through a few GMAT like questionsģ.
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