A stack of cards contains three RED cards numbered 1 , 2 , 3 and four BLUE cards numbered 1 , 2 , 3 , 4 . Let R be the event of drawing a red card, B the event of drawing a blue card, E the event of drawing an even-numbered card, and O the event of drawing an odd card. Drawing the Red 1 is an example of which of the following events? Select all correct answers. Select all that apply: R ′ B ′ O ′ R OR E B OR O B OR E



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