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t
The information display on a train shows letters by illuminating dots in a rectangular 5 x 8 array.


In the letter 't' shown, what fraction of the dots in the array is illuminated?
 




 

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.

 

 

This problem is taken from the UKMT Mathematical Challenges.
You can find more short problems, arranged by curriculum topic, in our short problems collection.