Introduction to Probability

1. You roll a fair 6 -sided die.

What is $\mathrm{P}$ (roll a 2)?

If necessary, round your answer to $2$ decimal places.

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2. Greg has an MP3 player called the Jumble. The Jumble randomly selects a song for the user to listen to. Greg's Jumble has $6$ classical songs, $7$ rock songs, and $9$ rap songs on it.

What is $\mathrm{P}$ (not a rap song)?

If necessary, round your answer to 2 decimal places.

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3. You draw a card at random from a deck that contains $3$ black cards and $7$ red cards.

What is $\mathrm{P}($ draw a black card $)$ ?

If necessary, round your answer to 2 decimal places.

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4. You spin the spinner shown below once. Each sector shown has an equal area.

What is $\mathrm{P}$ (beaver)?

If necessary, round your answer to 2 decimal places.

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5. You randomly draw a marble from a bag of marbles that contains $8$ blue marbles, $5$ green marbles, and $8$ red marbles.

What is $\mathrm{P}$ (draw a blue or red marble)?

If necessary, round your answer to 2 decimal places.

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6. Omar ordered his sister a birthday card from a company that randomly selects a card from their inventory. The company has $21$ total cards in inventory. $14$ of those cards are birthday cards.

What is $\mathrm{P}$ (not a birthday card)?

If necessary, round your answer to 2 decimal places.

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7. You spin the spinner shown below once. The spinner has $4$ equal sectors colored pink, purple, blue, and green.

What is $\mathrm{P}$ (blue)?

If necessary, round your answer to 2 decimal places.

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