Wednesday,Tom and Joe went to a restaurant and ate dinner. When they were done they paid and left. Tom and Joe didn't pay. Who did?
Wednesday(the name of the third person in the group,not the day)
Bạn thử chứng minh "3n = 4 với mọi n" thử xem nào?
3n = Ba n
4 = Bốn = Bố n