Question 7
The beavers usually make bracelets using these steps:
- Join a star-shaped bead (
) and a moon-shaped bead (
).
- Repeat this operation twice more.
- Join the pieces together into a chain.
- Add two more stars to the chain. Then join its ends to make a bracelet.
How many of the bracelets below definitely cannot be made this way?
- Join a star-shaped bead (
) and a moon-shaped bead ().- Repeat this operation twice more.
- Join the pieces together into a chain.
- Add two more stars to the chain. Then join its ends to make a bracelet.
How many of the bracelets below definitely cannot be made this way?