Headlands Number Crunch - Probability

Which description suggests the highest probability?

• likely

• unlikely

• very likely

• Impossible

A four sided spinner has the colours red, red, blue and green. What is the probability that the spinner will land on green?

• 0

• 1/4

• 1/3

• 1/2

A four sided spinner has the colours red, red, blue and green. What is the probability that the spinner will land on red?

• 0

• 1/4

• 1/3

• 1/2

In a box of chocolates there are 8 with soft centres, 6 with nutty centres and 10 with hard centres. What is the probability of choosing EITHER a soft centred OR a nutty centred chocolate?

• 8/24 or 6/24

• 10/24

• 14/24

• Unlikely

If I roll a fair dice, what is the probability of rolling a prime number?

• 1/6

• 2/6

• 1/2

• 4/6

If I choose a letter at random from the word PROBABILITY, what is the probability of choosing a vowel?

• 3/11

• 7/11

• Very likely

• 4/11

If I roll two fair six sided dice and add the two numbers together, which of the following scores is impossible?

• 1

• 4

• 7

• 12

If I pick a card at random from a normal pack of playing cards, what is the probability of picking any picture card (Jack, Queen or King)?

• 16/52

• 3/52

• 6/52

• 12/52

If I think of a number from 1 to 100, what is the probability of it being a cube number?

• 3/100

• 4/100

• 6/100

• 10/100

If I choose a random month of the year, which is the most likely outcome?

• Choosing a month with exactly 30 days

• Choosing a month beginning with the letter J

• Choosing a month ending with the letter Y

• Choosing a month containing less than 6 letters