The ‘Test next week’ logic puzzle
Spoken and written by Tudor Rickards
January 1st, 2025
A teacher tells her class
"I’m going to give you a test one day next week. I will not tell you the day, so that it will be a surprise for you".
This is a well-known puzzle in logic. Is the teacher correct in saying that the day of the test will be a surprise to her students?
If you haven’t heard this puzzle before, I’m giving you a little time to think about it. Serious thinkers may wish to halt the audio, until you think you have the answer, or have given up on it ...