2. There is a club whose members can be divided into two categories. The first is an honest man who always tells the truth. The second kind is a liar, always lying. One day, all the members of the club sat around a round table. Every honest man is surrounded by liars, and every liar is surrounded by honest people. The reporter asked Zhang San, a member of the club: How many members are there in the club? Zhang San replied: 45 people. Li Si said: Zhang San is an honest man, so is Li Si an honest man or a liar?
3. In a swimming competition, A, B, C and D participated in the final. Before the game, each of them said a word about the game. A said: I am the first and B is the second. B said: I am the first, and A is the fourth. C said: I am the first, and B is the fourth. Ding said: I am fourth and C is first. The result of the game was neck and neck, and everyone was only half right. Then, Ding is the first ().
Thirty students took part in the math contest. It is known that there is at least one boy in any contestant of 10, so there are at least () boys.
5. Party A, Party B, Party C and Party D play badminton doubles. It is known that (1) A is younger than B; (2) Ding is older than his two opponents; (3) A is older than his companion; (4) The age difference between A and B is greater than that between C and D. Try to judge who is the companion and tell the order of four people from small to large.
At an international football invitational tournament, five teams from Europe, America, Asia, Oceania and Africa all arrived. At the group draw ceremony, several reporters discussed the number of teams. A reporter: No.3 is the European team and No.2 is the American team; B reporter: No.4 is the Asian team and No.2 is the Oceania team; C reporter: 1No. is the Asian team and No.5 is the African team; D reporter: No.4 is the African team and No.3 is the Oceania team; E reporter: No.2 is the European team, and No.5 is the American team. As a result, everyone guessed only half right, so 1 is the () team, and No.3 is the () team.
8. The teacher issues different integer A, B and C cards.
Teacher: A's card is written with a two-digit integer, B's card is written with a one-digit integer, C's card is written with a two-digit integer less than 60, and A's number ×B's number = C's number. Please look at your numbers first, and then guess what the other two students' numbers are.
A: I can't guess the number of the other two.
C: I can't guess the other two.
A listened to C and asked B: Can you guess the number of C and me?
I can't guess the number of you two.
I heard. A: I already know the numbers of B and C. The number of B is () and the number of C is (). Right?
So, what are the numbers on the cards in the hands of three people?
A is (), B is () and C is ().
There are two red balls, two white balls and one red and one white ball in three boxes, but the labels on the outside of the boxes are all wrong. If only one ball is pulled out from one of the boxes, it is necessary to clearly determine what balls are contained in each of the three boxes, and a ball must be pulled out from the box where the ball is stuck (); If it is () colored ball, this box contains () ball, then the box with () ball contains () ball, and the rest boxes contain () ball.
10, three students, A, B and C, wearing three different colors of hats and clothes, took part in an activity to host the Olympic Games. As we all know:
(1) The colors of hats and clothes are only red, yellow and blue;
(2) A didn't wear a red hat and B didn't wear a yellow hat;
(3) Students wearing red hats don't wear blue clothes;
(4) Students wearing yellow hats don't wear red clothes;
(5) B is not wearing yellow clothes.
What color hats do A, B and C wear? What color clothes to wear?
1 1, Xiaoming, Xiaohua, Xiao Qiang, Xiaoying and Xiaolan are sitting in the same row. Xiaohua, Xiao Qiang and Xiaolan each said three sentences.
(1) Xiaohua: There are two people between me and Xiao Qiang. Xiaoming is closest to Xiao Qiang. Xiaolan and I are adjacent.
Xiao Qiang: Xiaolan and I are neighbors. I am also adjacent to Xiaohua. There are two people between Xiaohua and me.
Xiaolan: I am closest to Xiao Qiang. Xiaohua and I are neighbors. There is a man between Xiao Ming and me.
If only two of everyone's three sentences are true, then ask: who is sitting in the middle?
Six players (12, A, B, C, D, E, F) play a single round of table tennis (each player plays one game with other players), and each player plays one game on three tables at the same time every day. It is known that on the first day, B played against D, on the second day, C played against E, on the third day, D played against F, and on the fourth day, B played against C. Q: Who played a game with on the fifth day? Who is playing with whom on the other two tables?