CHALLENGE OF THE WEEK Zios and Zepts
You will need pencil and paper.
On the planet Ven there are two sorts of creatures.
Zios have 3 legs and Zepts have 7 legs.
When visiting Ven, the great explorer Nico saw a crowd of Zios and Zepts. Suddenly they all rolled over onto their backs and put their legs in the air.
He counted 52 legs.
How many Zios and how many Zepts were there?
Do you think there are any different answers? Can you find all the possibilities? Can you work systematically?