In a list of numbers, the first number is 3, the second is 4, and each subsequent number is the sum of all the preceding numbers in the list. If the 20th number in the list is x, what is the 25th number in the list?
【简答题】During my many contacts with people in China, I have been asked by two different people what I would recommend to them so that they could be happy. One of these people was my student and friend who be...
【简答题】Some people accuse me of being rude because I always introduce myself to other people I meet on trains; but l answer by telling them that the reason for my action is not curiosity but friendliness.