Can you solve the clues to find out who's who on the friendship graph?
Can you find a way to connect each house to the utilities without any pipes crossing?
How can you decide if a graph is traversable?
Can you find the missing constants from these not-quite-so-obvious definite integrals?
Can you find a polynomial function whose first derivative is equal to the function?
Can you explain what is going on in these puzzling number tricks?
How risky is your journey to school?
Are you at risk of being a victim of crime? How does your perception of that risk compare with the facts and figures?
Can you match the cards and figure out whether the tabloid headlines can be trusted?