Potatoes

Weekly Problem 19 - 2009
When I looked at the greengrocer's window I saw a sign. When I went in and looked from the other side, what did I see?
Age
11 to 14
Challenge level
filled star empty star empty star
Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Reasoning, convincing and proving
Being curious Being resourceful Being resilient Being collaborative


Looking in at the greengrocer's window it said

Potatoes


When I went inside and looked from the other side, what did I see?

 

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