a man was looking through a 6th floor window
thought for a minute then jumped
But did not die or get hurt at all
He jumped in the window.
He was outside the window
He was a window washer!!!
Bạn thử chứng minh "3n = 4 với mọi n" thử xem nào?
3n = Ba n
4 = Bốn = Bố n