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We had five solutions sent in altogether. Joe from St. Anne's school sent in a full solution as follows:
Pranesh from Holy Garden school also sent in correct answers for the three questions. We had a pleasant chatty note sent in by Charlie from Culford Prep School as follows:
You are absolutely right in your thinking, well done!
The following solution also came in but unfortunately no name or school was attached.
Finally, from Hotwells School: