I'm not the sort that's eaten, I'm not the sort you bake,
Don't put me in an oven; I don't taste that great,
But when applied correctly, around me you will find,
Problems are so simple when my digits come to mind.
Answer: Pi.
This riddle appears in the following downloadable PDF files:
Can you solve one of the most famous logic puzzle ever?
Memory Matching game for kids, adults and seniors.
Connect the matching tiles and pop them all.