Many years ago I was accosted by an angry fellow teacher who accused one of my form of taking the mickey out of his maths assessment. A rather stupid question was worded as follows:
"I need 5 biscuits on monday, 7 on tuesday, 19 on Wednesday,20 on Thursday and 15 on Friday. When I go to the shops, how many do I need to buy?"
The child , who did most of the shopping for her family ,gave the answer, "One large box."
Well, ask a stupid question and you might just get a very smart answer!