Grade 10 End of Week 10 Assessment.

There are only pink, yellow, green and blue counters in a bag.

The table shows the probability that a counter taken at random from the bag

will be pink, green or blue.

Calculate the missing probability of choosing a yellow counter.

Which option shows the correct missing numbers?

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Two bags, 1 and 2, each contain three counters.

In bag 1, the counters are labelled 1, 2 and 5.

In bag 2, the counters are labelled 2, 3 and 4.

A counter is drawn at random from bag 1 and a counter

is drawn from bag 2.

The two numbers are Multiplied together to give a score.

Which possibility diagram shows the sample space?

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Two bags, 1 and 2, each contain three counters.

In bag 1, the counters are labelled 1, 2 and 5.

In bag 2, the counters are labelled 2, 3 and 4.

A counter is drawn at random from bag 1 and a counter

is drawn from bag 2.

The two numbers are Multiplied together to give a score.

Find the probability of scoring a multiple of 4

Two bags, 1 and 2, each contain three counters.

In bag 1, the counters are labelled 1, 2 and 5.

In bag 2, the counters are labelled 2, 3 and 4.

A counter is drawn at random from bag 1 and a counter

is drawn from bag 2.

The two numbers are Added together to give a score.

Which possibility diagram shows the sample space?

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13 of the 20 students in Mr Davidson’s class are girls.

Two students are chosen at random.

Work out the probability of two boys

being selected.

(Write your answer as a fraction in the simplest form using the / symbol e.g. 1/2)

13 of the 20 students in Mr Davidson’s class are girls.

Two students are chosen at random.

Work out the probability of two girls

being selected.

(Write your answer as a fraction in the simplest form using the / symbol e.g. 1/2)

There are 12 sweets in a bag

7 are lemon and 5 are orange.

Two sweets are taken out at random without replacement.

Work out the probability that the two sweets are the same Flavor

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There are 12 sweets in a bag

7 are lemon and 5 are orange.

Two sweets are taken out at random without replacement.

Work out the probability that the two sweets are the different Flavor.

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Calculate the probability that the weather is dry and the bus is on time. (write your answer to 3 decimal places)

Hint: Draw a tree diagram to see the possibilities.