Probability Tree

Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability both are odd?

• 1/4

• 1/2

• 2/4

• 3/4

Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability that one is even and one is odd?

• 1/2

• 1/4

• 3/4

• 1/3

There are 10 counters in a bag, 3 red and 7 blue. I take one counter, then another without replacement. Find the probability of the value marked y

• ⁷/₁₀

• ³/₁₀

• ⁶/₉

• ²/₉

There are 10 counters in a bag, 3 red and 7 blue. I take one counter, then another without replacement. Find the probability of picking one of each colour counters.

• ²¹/₉₀

• ⁴⁸/₉₀

• ⁴²/₉₀

• ¹⁰/₁₉

A tree diagram is useful in determining the __________of a probability experiment.

• result

• possible outcomes

• event

• none of the above

There are 8 counters in a bag, 1 is red.

I take one counter, replace it, then take another.

What is the probability of taking a red counter on the first go?

• ¹/₈

• ⁷/₈

• ¹/₇

• ⁶/₇

There are 8 counters in a bag, 1 is red. I take one counter, replace it, then take another. What is the probability of taking a red counter on the second go?

• ¹/₈

• ⁷/₈

• ¹/₇

• ⁶/₇

There are 8 counters in a bag, 1 is red.

I take one counter, replace it, then take another.

What is the probability of taking two red counters?

• ¹/₈

• ¹/₆₄

• ²/₈

• ²/₆₄

There are 8 counters in a bag, 1 is red.

I take one counter, replace it, then take another.

What is the probability of taking counters of the same colour?

• ¹⁴/₆₄

• ¹/₆₄

• ⁵⁰/₆₄

• ⁴⁹/₆₄

Jim and Sue each take a driving test.

What is the probability that only one of them will pass the test?