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1. A team of 5 is to be chosen from 4 grade 10, 3 grade 9, and 2 grade 8. How many different teams can be chosen if the team is to include 2 G10, 2 G9, and one G8?

2. A preschool teacher has box that contains 2 yellow balls, 3 pink balls and 4 blue balls. In how many ways can 3 balls be drawn from the box, if at least 2 pink ball is to be included in the draw?

3. A bookstore has 7 types of notebooks and you need to buy 3. How many different selections can you make?

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YuukiHazamaviz

☞ANSWER

1. 105

  • THE SOLUTION IS IN THE PIC

2. 18

  • [tex] \frac{4 \times 3 \times 2 \times 1}{1 \times 2} = 6 \: ways[/tex]
  • [tex] \frac{3 \times 2 \times 1}{1 \times 2} = 3 \: ways[/tex]
  • 6 x 3= 18 ways

3. 84

  • In the pic

Step-by-step explanation:

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View image YuukiHazama