The words of a friend.

My wife and I decided to give our daughter to Mat. school in Petrograd. There was before such, not quite of course maths school, but mathematics was taught well. I took my daughter to an interview, and she was 6 years old. The questions were easy, she answered everything correctly. Then the teacher asked her the last question:
Imagine you have an apple, with branches of apples on it. On one branch 7 apples, on the other - 8, on the third 9. How many apples in an apple?
The girl, without thinking, says, is 24.
The teacher wondered how she thought.
- Well, I took one apple from the third branch, weighed on the first, and three times eight will be 24.
This interview ended.

The teacher takes me to the side and begins, - your child is of course weak, maybe our school will not suit her, but... and herself, rubbing her fingers reflexively, as if she was already counting the money. I understood what she wanted, and, confidently looking in her eyes, I said:
In fact, she has just developed Gauss’s method of finding the sum of a series. So you’re right, maybe your school doesn’t fit her.

My daughter, by the way, was taken. Maybe I’m going to complain.