maucematherwice maucematherwice

21-11-2016
Mathematics

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How many subsets of at least four elements does a set of seven elements have?

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JonathanHagen JonathanHagen

21-11-2016

1234567

1234
2345
3456
4567
5671
6712
7123
12345
23456
34567
45671
56712
67123
71234
123456
234567
345671
456712
567123
671234
712345
1234567

22 subsets.

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