Aussie Maths & Science Teachers: Save your time with SmarterEd
The numbered balls below are placed in a bag.
Petunia reaches into the bag and takes out a ball without looking.
Which type of ball is she most likely to take out?
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`text(The most common ball is:)`
Penny gets to take 1 marble from a dish.
| Penny wants to choose this type of marble |  |
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| Which dish gives Penny the best chance of choosing a | |
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`text(Looking at each dish, the chances of choosing)`
`text(the marble she wants is:)`
`text(Dish 1:)\ \ 4/10`
`text(Dish 2:)\ \ 2/6`
`text(Dish 3:)\ \ 3/7`
`text(Dish 4:)\ \ 3/6`
`=>\ text{Best chance is with the dish (above)}`
`text(as the chances are)\ 1/2.`
Kylie picks 1 marble from Bag 1 and 1 marble from Bag 2.
Which pair of marbles is it impossible for Kylie to pick?
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Rudolph takes 4 marbles out of the bag at the same time.
Which of these is impossible?
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3 striped marbles and 1 white marble. |
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3 white marbles and 1 grey marble. |
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2 star marbles and 2 white marbles. |
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2 striped marbles and 2 grey marbles. |
Tango picks two of these balls.
He adds up the circled numbers on the balls he picked to get a total.
Which of these totals is impossible for him to get?
| `4` | `5` | `6` | `8` |
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Ricky has three boxes of balls.
He picks one ball out of each box.
Which of these could be the balls he chooses?
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