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by jameshl2008
Mon Apr 08, 2013 8:13 pm
Forum: Discrete Math
Topic: How many subsets does the set have?
Replies: 2
Views: 4195

How many subsets does the set have?

How many subsets does the set have?
{Children,Teen,Adult} X {male,female}
by jameshl2008
Thu Apr 04, 2013 6:28 pm
Forum: Discrete Math
Topic: Give a mathematical proof by contradiction
Replies: 1
Views: 1684

Give a mathematical proof by contradiction

For any real numbers a1, a2, a3, we must have that one of the numbers is less than or equal to the average (a1+a2+a3)/3.

Should I start by assuming the contra positive? Very confused.

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