# Compound Events (Grade 7)

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## Compound Events

1.

If Shawna tosses a dime and a nickel into the air at the same time, what is the probability that they will both land on heads?

- [math]1/2[/math]
- [math]2/2[/math]
- [math]1/4[/math]
- [math]3/4[/math]

2.

Sarah has 3 skirts (black, white and blue) and 3 blouses (red, green and yellow). How many different outfits can she make if each outfit has one skirt and one blouse.

- 9
- 6
- 5
- 3

3.

Randy spins the arrow on a spinner with 5 equal sections labeled A, B, C, D, and E. Then, he rolls a 6-sided number cube with sides numbered 1 through 6. What is the probability that the arrow will stop on the letter A and the number cube will show the number 4?

- 1/30
- 1/11
- 1/6
- 1/5

4.

A fair coin will be flipped 3 times. What is the probability that the coin will land on tails exactly once?

- [math]1/8 [/math]
- [math]1/3 [/math]
- [math]3/8 [/math]
- [math]5/8 [/math]

5.

How many outcomes will you get if you toss a coin once and roll a die twice?

- 72
- 14
- 18
- 38

6.

Find the number of possible combinations.

Choose one of 3 books and one of 8 CDs to bring on a bus trip.

Choose one of 3 books and one of 8 CDs to bring on a bus trip.

7.

Find the number of possible combinations.

Choose one of the letters A, B, C or D and one of the numbers 1 or 2.

Choose one of the letters A, B, C or D and one of the numbers 1 or 2.

8.

Make a tree diagram to list all the possible outcomes.

Pick one card from 3 cards and toss a number cube with numbers 1-6 on it.

Pick one card from 3 cards and toss a number cube with numbers 1-6 on it.

9.

Find the number of possible outcomes.

Pick one card from each of two piles. One pile has the cards labeled F, I, T, P, N, C, and O. The other has the cards labeled A, R, S, and O.

Pick one card from each of two piles. One pile has the cards labeled F, I, T, P, N, C, and O. The other has the cards labeled A, R, S, and O.

10.

Suppose four coins are tossed at the same time. What fraction, in simplest form, describes the theoretical probability that all of the coins will land tails up?

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