JEE Mains 10-Apr-2023 Shift 1 Solved Paper

Section: Mathematics
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Question : 21 of 90
 
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Some couples participated in a mixed doubles badminton tournament. If the number of matches played, so that no couple in a match, is 840 , then the total numbers of persons, who participated in the tournament, is _______.
[10-Apr-2023 shift 1]
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