A teacher teaching Maths to seven-year-old Arnav asked him, "If I give you one apple and one apple and one apple, how many apples will you have?" Within seconds Arnav replied confidently, "Four!"
The dismayed teacher was expecting an effortless correct answer (three). She was disappointed. "Maybe the child did not listen properly," she thought. She repeated, "Arnav, listen carefully. If I give you one apple and one apple