While working on an old weaving machine, Aisha spied a dial that needed repairing.
The dial had numbers counting upwards, evenly spaced around the outside. Although she couldn’t see the whole dial, she could see that the number 6 was directly opposite 17.
Can you work out how many numbers there are on the dial?
Scroll down for the answer!
Brainteaser answer
If the numbers are evenly spaced, there will be the same amount between 6 and 17, whichever way you go.
There are ten numbers between 6 and 17, so there must be ten between 17 and 6. Adding in both 17 and 6, there must be 22 numbers in total!
For more brainteasers and puzzles for kids, subscribe to Double Helix magazine!
Leave a Reply