My eldest son is a Maths teacher at a secondary school. He teaches all age groups and this little incident was from one of his 11 year old students.
Throughout the year, various set project works are done.
Some time ago, the students were given this piece of work which asked, "If you flipped two coins, list the possible outcomes?"
They all worked out the answer:
Heads + Heads
Heads + Tails
Tails + Tails.
This little exercise was to prepare them for a particular question that was going to be coming at the end of year exams. OK?
The exam came and the question was, "If a mother gives birth to twins, list the possible outcomes?"
One student answered, "The mother could take both babies home. Take just one baby home. Or take none of the babies home."
Unfortunately, no marks could be given for this extremely accurate answer!