You may also like

Three Ball Line Up

Use the interactivity to help get a feel for this problem and to find out all the possible ways the balls could land.

Birds in the Garden

This activity asks you to collect information about the birds you see in the garden. Are there patterns in the data or do the birds seem to visit randomly?

Two and One

Age 5 to 7 Challenge Level:

We had some good solutions to this problem. Rukmini from Dowanhill Primary wrote:

I first got some red and blue wooden pieces. Next, I sorted out these ones.
The combinations were:
Blue Red Blue (Terry wins)
Red Blue Blue (Ali wins)
Blue Blue Red (Ali wins)
No, this is not a fair game because Terry only has one winning set and Ali has two possible winning sets. It's more likely that Ali will win.

You're right, Rukmini, well done. Nicholas who goes to Lochinver House School and Courtney from Holystone Primary expressed their solution in a slightly different, but equally as good, way. Courtney said:

It is not fair because Terry has a one in three chance but Ali has a $2$ in $3$ chance.