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[" The letters of the word "^(" “ ")" AR...

[" The letters of the word "^(" “ ")" ARTICLE" are "],[" taken four at a time and arranged in all "],[" possible ways.The number of "],[" arrangements containing "'R'" and not "],[" containing "^(6)E" ' is "],[[" (1) "60," (2) "120," (3) "480," (4) "240]]

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