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19 Apr 2023, 04:45
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Ques: we have to make a reading list of 4 from 5 novels and 3 articles such that we have 2 novels and 2 articles.
How are we going to solve in both the cases when order matters and order doesn't matter?
I have a confusion coz of the below mentioned thing:
so we have to make a four digit number such that every digit is distnict.
Answer to this question will be 9*9*8*7
In the above question we dont have to take order into consideration, coz whenever we multiply we already take order into consideration.
How are we going to solve in both the cases when order matters and order doesn't matter?
I have a confusion coz of the below mentioned thing:
so we have to make a four digit number such that every digit is distnict.
Answer to this question will be 9*9*8*7
In the above question we dont have to take order into consideration, coz whenever we multiply we already take order into consideration.
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19 Apr 2023, 12:59
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jim441
Order doesn't ever matter in that question.
You just find how many sets of two novels and sets of two articles you can choose and multiply the number of sets of novels by the numbers of sets of books.
19 Apr 2023, 13:03
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MartyTargetTestPrep
All I want to know is if I multiply 5C2 and 3C2, Am I considering all the ordered pairs??
