There are12waysyou can buycookieif cookies aresold singlyor inpackagesof3 or 9.What is permutation and combination?Apermutationis thenumberofdifferentways asetcan beorganized; ordermattersinpermutations, but not incombinations.As we have:Cookies aresold singlyor inpackages of 3 or 9.So thetotal waysyou buy thecookiesuch thattotal cookieyoubuyis18:Two - 9One - 9, Three-3One 9, Two 3, 3 singleOne 9, one 3, 6 singleOne 9, 9 singleSix 3Five 3, 3 singleFour 3, 6 singleThree 3, 9 singleTwo 3, 12 singleOne 3, 15 singleAll 1(18 single)Thus, there are12waysyou can buycookieif cookies aresold singlyor inpackagesof3 or 9.Learn more aboutpermutation and combinationhere:brainly.com/question/2295036#SPJ2...

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