Three children are going to buy some plants for their birthdays. They will plant them within circular paths. How could they do this?
On my calculator I divided one whole number by another whole number and got the answer 3.125 If the numbers are both under 50, what are they?
Have a go at this well-known challenge. Can you swap the frogs and toads in as few slides and jumps as possible?
I have fifteen cards numbered $1 - 15$.
I put down seven of them on the table in a row.
The numbers on the first two cards add to $15$.
The numbers on the second and third cards add to $20$.
The numbers on the third and fourth cards add to $23$.
The numbers on the fourth and fifth cards add to $16$.
The numbers on the fifth and sixth cards add to $18$.
The numbers on the sixth and seventh cards add to $21$.
What are my cards?
Can you find any other solutions?
How do you know you've found all the different solutions?