A teacher has trained 8 boys and 4 girls and wants to select one of them for the inter-school solo dance competition. In how many ways can the teacher make this selection?

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Solution

The correct option is D 12
In the first choice, the teacher can select a boy among 8 boys in 8 ways.
In the second choice, the teacher can select a girl among 4 girls in 4 ways.
Hence, the teacher can select a solo dancer who is a boy or a girl in 12 different ways (8 boys + 4 girls).

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A teacher has trained 8 boys and 4 girls and wants to select one of them for the inter-school solo dance competition. In how many ways can the teacher make this selection?

The correct option is D 12In the first choice, the teacher can select a boy among 8 boys in 8 ways.​ In the second choice, the teacher can select a girl among 4 girls in 4 ways.​ Hence, the teacher can select a solo dancer who is a boy or a girl in ​12 different ways (8 boys + 4 girls).

The correct option is D 12
In the first choice, the teacher can select a boy among 8 boys in 8 ways.
In the second choice, the teacher can select a girl among 4 girls in 4 ways.
Hence, the teacher can select a solo dancer who is a boy or a girl in 12 different ways (8 boys + 4 girls).