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How many combinations without repetition are possible if n = 6 and r = 3? 56 20 27 18
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6 votes
How many combinations without repetition are possible if n = 6 and r = 3? 56 20 27 18

User Jonathan Ivgi
by
4.9k points

1 Answer

1 vote

Answer:18

Explanation:

n+r=9

n×r=27

r²=9

n²=36

n+n=12

r+n=9

r+r=6

User Miboper
by
5.1k points
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