problem
Flow chart
Age
11 to 14
Challenge level
The flow chart requires two numbers, M and N. Select several values
for M and try to establish what the flow chart does.
problem
Procedure solver
Age
16 to 18
Challenge level
Can you think like a computer and work out what this flow diagram
does?
problem
Zeller's birthday
Age
14 to 16
Challenge level
What day of the week were you born on? Do you know? Here's a way to
find out.