Year 7 Probability Quiz

From the list, what is the word which best describes the likelihood of getting a 2 on this spinner

• impossible

• unlikely

• even chance

• likely

• certain

There are 12 marbles in a bag.

4 are pink.

6 are blue.

2 are yellow.

One marble is selected at random.

Which scale represents with a red cross the probability that this one picked is blue.

• 
• 
• 
• 

There are 15 flavoured sweets in a box. There are 5 strawberry, 4 lemon, 3 apple and 3 orange.

If one is picked at random, what is the probability it is a strawberry sweet?

• 15/5

• 5

• 10/15

• 5/15

There are 15 flavoured sweets in a box. There are 5 strawberry, 4 lemon, 3 apple and 3 orange.

If one is picked at random, what is the probability it is NOT an apple sweet?

• 3/15

• 12/15

• 12

• impossible

If I were to toss a fair coin 40 times and I want to get a heads, what is the expected number of successful outcomes?

• 1/2

• 20/40

• 20

• 1

I have now tossed a coin 40 times and i got a heads 17 times.

What is the experimental probability (also known as?) of getting a heads.

• 1/2

• 40/17

• 17

• 17/40

Is this a fair coin?

• YES

• NO