Mathematics Homework Help
Mathematics Homework Help. problem 270 and 267 mathcounts
1.The digits 2,0,1 and 4 are used to create every possible positive 4 digit integer, with each digit used exactly once in each integer. What is the arithmetic mean of all these integers?
2.How many elements are in the set {x^2-2x+1|x=-5,-4,…,4,5}?
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