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quiz6solution

# quiz6solution - SOLUTHN¢ Math 125—002 Fall 2009 Quiz 6...

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Unformatted text preview: SOLUTHN¢ Math 125—002 Fall 2009 Quiz 6 Name: Last... First... (1) (3 points) In how many ways can the digits 1..9 be permuted so that exactly three of the digits remain on their natural positions? (Your answer may contain symbols like 7!, 3m, P(100,23), ( 171 ), D15, etc.) (2).)hmaiwls of R ”Wag/£1 '3 W; VM—wC-k as am Maw; (Your answer may contain symbols like 7!, 31°, P(100, 23), m :— ‘Ti'2‘;<‘2>(w>’“ s) s F —'-o 20' Sr = ll r = 3 Coeﬁ = < IO .23 5 (3) (4 points) Simplify the following expressicms: n M 100 100 _ (RC ) :: < ’3 3 ‘ 97 ._... O ““92 ‘— h-V G%@%Uiﬁ)swﬂ<msc:tC:v Uﬂ%ﬂ%3%sW%ﬂmaztl Ill-n-ln-u'u-m—um—Ii E-e wsVicA Sext— MS Pflkﬂg ...
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