For example, my college roommate, I always thought he had a strong talent for mathematics. During these years with him, many things can be explained.
Computer major involves a lot of mathematical knowledge. And he did very well in this respect. He is not a recognized bully, but he can always understand and digest what the teachers say quickly. When I was playing with my mobile phone, he listened carefully and remembered what the teacher said for a long time.
In addition, I still remember that when I played mahjong in the dormitory, what I didn't like most was not losing a few dollars, but settling accounts. Because we don't end a game, but we use playing cards instead of chips first, and finally we exchange playing cards.
But everyone owes different debts to others, and some chips are borrowed from others after losing. I really don't know how to calculate. And he thought for a while, and said who gave who how much money, and when he told us carefully, we all nodded and agreed.
I have to say, he is very sensitive to numbers. He can also solve problems related to numbers quickly.