Combining probabilities

problem
Statins and risk

Age

14 to 16

Challenge level

"Statins cut the risks of heart attacks and strokes by 40%"
Should the Professor take statins? Can you help him decide?
$How Risky \is my diet?$

problem
How risky is my diet?

Age

11 to 16

Challenge level

Newspapers said that eating a bacon sandwich every day raises the risk of bowel cancer by 20%. Should you be concerned?
problem
Chance combinations

Age

11 to 14

Challenge level

Can you design a bingo board that gives you the best chance of winning?