What is the largest prime factor of 636?______

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问题 What is the largest prime factor of 636?______

选项

答案53

解析 The correct answer is 53. The best way to determine the prime factors of a large number is to use a factor tree. Start with 636, and divide by any available prime factor: for instance, two factors of 636 are 2 and 318. Next, 318 is divisible by the prime number 3, leaving 106. Finally, 106 is divisible by 2, which leaves you with 53.

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What is the largest prime factor of 636?______

GRE QUANTITATIVE

GRE

Duringhislife,J.S.BachwasnotaspopularasBeethovenandMozartduringtheirlifetimes.Hismusicwasconsideredhardto

AstronamersbelievethattheexpandinguniverseistheresultofanenormousandpowerfulexplosioncalledtheBigBang.TheBi

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Therearemanyolderpeopleintheworldandtherewillbemanymore.Alittle-knownfactisthatover60percentoftheolderp

Outofallthestudentswhoenrollinamassiveopenonlinecourse(MOOC),onlyabout5percentcompletethecourseandreceive

Staffhavebeenholdinganumberof______toraisemoneyforcharity.

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Ifrisnegativeandsispositive,whichofthefollowingmustbenegative?

(a)Whatistheprimefactorizationof372?(b)Whatarethepositivedivisorsof372?

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