Written Work (COMBINATIONS) 20 points C(n,r) = \frac{n!}{(n-r)!r!} I. Find the value of the following, (Show your solution. 2 pts each) 1. C (7,2) 2. C (5,4) 3. C (24, 20). C(10, 6) 4. C (8, 2), C (7, 5)
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1) C(7,2): Using the formula C(n,r) = n! / (r!(n-r)!), we can calculate C(7,2) as follows: C(7,2) = 7! / (2!(7-2)!) = 7! / (2!5!) = (7 * 6 * 5!) / (2!5!) = 7 * 6 = 42 Show more…
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