SOLUTION: An electronics store receives a shipment of 20 graphing calculators, 8 that are defective. Four of the calculators are selected to be sent to a local high school.
(A) How ma
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Question 1150506: An electronics store receives a shipment of 20 graphing calculators, 8 that are defective. Four of the calculators are selected to be sent to a local high school.
(A) How many selections can be made?
(B) How many of these selections will contain no defective calculators?
Answer by ikleyn(52905) (Show Source): You can put this solution on YOUR website!
.
(A) = .
(B) = = .
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On Combinations, see introductory lessons
- Introduction to Combinations
- PROOF of the formula on the number of Combinations
- Problems on Combinations
- OVERVIEW of lessons on Permutations and Combinations
in this site.
Also, you have this free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Combinatorics: Combinations and permutations".
Save the link to this textbook together with its description
Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson
into your archive and use when it is needed.
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