On a clock the three hands - the second, minute and hour hands - are on the same axis. How often in a 24 hour day will the second hand be parallel to either of the two other hands?
At the time of writing the hour and minute hands of my clock are at
right angles. How long will it be before they are at right angles
Can you use LOGO to create this star pattern made from squares.
Only basic LOGO knowledge needed.
This problem is taken from the UKMT Mathematical Challenges.