Probability and Sets

If a letter is drawn randomly from the bag shown, what is the probability that it is not the letter R?

• 5

• 9/14

• 5/14

• 1/2

If a letter is drawn randomly from the bag shown, what is the probability that it is N or R?

• 1/14

• 7/15

• 5/14

• 1/2

If a letter is drawn randomly from the bag shown, what is the probability that it is not a consonant?

• 1/14

• 7/15

• 5/14

• 1/2

The Year 7 girls in a primary school are surveyed to find what sports they play. The results are shown in the Venn diagram. If a Year 7 girl is selected at random, what is the probability that she plays volleyball?

• 20

• 0.5

• 0.4

• 30/50

A box contains 12 pens, 5 of which are defective. If two pens are drawn one after the other without replacement, what is the probability that both are defective?

In a deck of 52 cards, two cards are drawn successively without replacement. What is the probability that both cards are aces?

Choose the correct notation and then find the probabilities associated with randomly selecting a high school student who:

• undefined = 0.45
  

Choose the correct notation and then find the probabilities associated with randomly selecting a high school student who:

• undefined = 0.45
  

Which formula is used to compute the probably of two sets that are put together (non-mutually exclusive)?

• P(A or B) = P(A) + P(B) - P(A or B)

• P(A or B) = P(A) + P(B) - P(A and B)

• P(A and B) = P(A) + P(B) - P(A and B)

• P (A and B) = P(A) + P(B) - P(A or B)

The Year 7 girls in a primary school are surveyed to find what sports they play. The results are shown in the Venn diagram. If a Year 7 girl is selected at random, what is the probability that she plays all three sports?

• 3

• 6

• 0.06

• 0.03