In class V, there are 15 boys and 8 girls. The teacher wants to select either a boy or a girl as the class leader. In how many ways can the teacher select the class leader?

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Solution

The correct option is C 23
In the first choice, the teacher can select a boy among 15 boys in 15 ways (who ever may be of the 15 boys).
In the second choice, the teacher can select a girl among 8 girls in 8 ways (who ever may be of the 8 girls).
Hence, the teacher can select the class leader who is a boy or a girl in 23 different ways (15 boys + 8 girls).

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