Question: A circle is divided into 21 equal parts. A pointer is spun until it stops on one of the parts, which are numbered from 1

A circle is divided into 21 equal parts. A pointer is spun until it stops on one of the parts, which are numbered from 1 through 21. Describe the sample space and, assuming equally likely outcomes, find
(a) P(an even number);

(b) P(the number 21);

(d) P(a number greater then 10).

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