A teacher has randomly selected 40 students from her class. She found that 13 of them are left- handed and 9 of them are wearing
A teacher has randomly selected 40 students from her class. She found that 13 of them are left- handed and 9 of them are wearing watches. The number of students who are left-handed and do not wear a watch is 5. Wear Watch Colour Yes No Left-handed Not left-handed
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