emyjo503 emyjo503

12-02-2021
Mathematics

contestada

there are 20 students in chess club. two students are to be selected for representing the club in a school meeting. in how many ways can a pair of students be selected from the chess club?

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loothlaish loothlaish

12-02-2021

first way is play a match between all of them and select first Palace and second to be selected in the meeting

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