Mathematics, 29.06.2019 22:40, prasiddhipawani
Prove the identity $n r %$r k % = $n k %$n−k r−k % , whenever n, r, and k are nonnegative integers with r ≤ n and k ≤ r, a. using a combinatorial argument. b. using an argument based on the formula for the number of r-combinations of a set with n elements
Answers: 2
Mathematics, 21.06.2019 17:00, ayoismeisalex
Describe what moves you could use to create the transformation of the original image shown at right
Answers: 1
Mathematics, 21.06.2019 23:00, fatimababy
700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?
Answers: 1
Prove the identity $n r %$r k % = $n k %$n−k r−k % , whenever n, r, and k are nonnegative integers w...
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