Solved: III t."xerciJ/'s 20 and 21. lI~e Corollary 4.8 to find Ollt lI"ilnher rank A = 3
Chapter 4, Problem 20(choose chapter or problem)
III t."xerciJ/'s 20 and 21. lI~e Corollary 4.8 to find Ollt lI"ilnher rank A = 3 jor each girl'n IIImrix(a) A =- 3 2(b) A = [_~ 3 ~] - 9 15 0
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