A computer store has 10 copies of a word processing program. 12 copies of a spread sheet program, an

A computer store has 10 copies of a word processing program. 12 copies of a spread sheet program, and 8 copies of a drawing program. Three of the word processing, four of the spread sheet, and two of the drawing program are infected with a virus. If a program is selected at randow, the probability it is infected with a virus is?

A. 11/30

B. 7/30

C. 3/10

4. 1/4

 

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