Probability Tree Diagrams and Relative Frequency

Jim and Sue each take a driving test.

The probability that Jim will pass the driving test is 0.7

What is the probability he fails the test?

Jim and Sue each take a driving test.

The probability that Sue will pass the driving test is 0.6

What is the probability he fails the test?

Jim and Sue each take a driving test.

What is the probability that both Jim and Sue pass the test?

Terri has 7 pens in a box.

2 of the pens are blue, 5 of the pens are red.

Terri takes a random a pen from the box.

What is the probability that she picks a blue pen?

(Give answer as a fraction)

Terri has 7 pens in a box.

2 of the pens are blue, 5 of the pens are red.

Terri takes a random a pen from the box.

What is the probability that she picks a red pen?

(Give answer as a fraction)

In a game of chess, a player can either win, lose or draw.

The probability that Jane wins any game of chess is 0.2

The probability that Jane draws any game of chess is 0.3

What is the probability that she loses?

If Jane plays two games of chess, what is the probability that she wins both games?

What is the value of 'a'?

• 28

• 21

• 18

• 38

What is the value of 'b'?

• 28

• 21

• 11

• 19

What is the value of 'c'?

• 28

• 21

• 25

• 3