Probability of Compound Events

Events that consist of more than one outcome.

• simple events

• compound events

• sample space

• outcome

A set of possible outcomes resulting from a particular experiment.

• simple events

• compound events

• sample space

• outcome

The probability of heads landing up when you flip a coin is 1/2. What is the probability of getting tails if you flip it again?

• 1/4

• 1/3

• 1/2

• 3/4

For numbers 4-7, use the following situations,

The extracurricular activities participated by members of Mathematics Club of San Isidro National High School Venn diagram below. How many members are in Mathematics club?

• 100

• 108

• 120

• 150

How many members participate in athletics?

• 22

• 39

• 53

• 71

If a member is randomly chosen, what is the probability that a member participates in athletics or band?

• 9/10

• 5/6

• 7/10

• 13/30

If a member is randomly chosen, what is the probability that a member participates only in athletics and band?

• 13/120

• 17/120

• 3/120

• 11/60

A box contains 2 red, 4 green, 5 blue and 3 yellow marbles. If a single random marble is chosen from the box, what is the probability that it is red or green marble?

• 1/14

• 3/7

• 9/14

• 2/7

What is the probability of randomly picking a number from 1 to 10 that is even or greater than 5?

• 1/2

• 6/10

• 2/3

• 7/10

The spinner on the right is spun. What is the probability of a spin that results in an even number or a number less than 4?

• 1/4

• 3/8

• 1/2

• 3/4