Probability revision

What probability should replace the x?

• 0.4

• 0.5

• 0.6

• 0.8

Assuming that the weather today does not affect the weather tomorrow, what probability should replace the x?.6

• 0.6

• 0.2

• 0.4

• 0.8

Assuming that the weather today does not affect the weather tomorrow, what probability should replace the x?

• 0.6

• 0.4

• 0.2

• 0.8

What is the probability of getting red (R) on both goes?

• $\frac{16}{81}$

• $\frac{4}{9}$

• $\frac{16}{9}$

• $\frac{20}{81}$

What is the probability of getting red (R) followed by blue (B)?

• $\frac{16}{81}$

• $\frac{4}{9}$

• $\frac{16}{9}$

• $\frac{20}{81}$

What is the probability of getting two blue (B)?

• $\frac{16}{81}$

•  $\frac{5}{9}$ 

•  $\frac{25}{9}$ 

•  $\frac{25}{81}$ 

The tree diagram shows the probabilities when two chocolates are removed from the box. Is the first chocolate put back in the box before the second one is taken out.

• No, I know because I can see the probabilities for the 2nd pick are different.

• No, but I'm not sure how to explain.

• Yes, I know because I can see that the choices of milk and plain are the same on both picks.

• Yes, but I'm not sure how to explain.

What probability should replace the x?

• $\frac{3}{10}$

• $\frac{3}{9}$

• $\frac{7}{9}$

• $\frac{2}{9}$

• $\frac{6}{9}$

If we take one card and don't replace it, how many cards will we have to choose from on our 2nd pick?

• 10

• 2

• 9

• 1

• 8

What probability should replace the x?

• $\frac{3}{10}$

• $\frac{3}{9}$

• $\frac{7}{9}$

• $\frac{2}{9}$

• $\frac{6}{9}$