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| 好耐冇寫XANGA~
按這裡進入游戲
呢個GAME 好好玩嫁
燒磨時間一流 | | |
| 雖然係Asso Year two,但d野真係難左好多
科科都好"金",不過好在冇左我最唔鐘意既英文科
而加科科都幾鐘意讀
呢排係咁mid-term + assignment + project
日日都好唔得閒
呢排做logic iq 題,原來考試都會考iq題-0-
1. A hard logical puzzle, originated by R. Smullyan and modified by John McCarthy:
Three gods A, B, and C are called, in some order, True, False, and Random.
True always speaks truly, False always falsely, but whether Random speaks
truly or falsely is a completely random matter. Your task is to determine the
identities of A, B, and C by asking three yes-no questions; each question
must be put to exactly one god. The gods understand English, but will answer
all questions in their own language, in which the words for "yes" and "no" are
"da" and "ja," in some order. You do not know which word means which.
You should know how to solve this puzzle by now. If not, read the solution again,
which is available from SMILE.
Past Exam Questions
2. You know that the man in front of you is a logician who is either a knight (who always speaks truly) or a knave (who always speaks falsely). Suppose that you don’t know what day it is today. What one yes-or-no question would you ask this man such that from the answer to this question you can tell for sure whether today is Friday or not? Justify your answer.
(4 marks)
3. A diamond ring was stolen and the following data was gathered by the police:
D1: Either A did it or B did it or C did it.
D2: If A stole the ring, then either B or C (but not both) did it with A.
D3: If B didn’t steal the ring, then C didn’t do it.
D4: If C didn’t steal the ring, then B didn’t do it.
Who stole the ring? Justify your answer. (4 marks)
4. You meet three people, each of whom is either a knight (who always speaks truly) or a
knave (who always speaks falsely). They make the following three statements:
A: If B is speaking falsely, then so is C.
B: C is speaking truly.
C: At least one of us is speaking falsely.
Who, if anyone, is speaking truly? Justify your answer.
(4 marks)
5. Among the five people A, B, C, D and E, two are moral saints who never speak falsely
and the other three are normal people who sometimes speak truly and sometimes speak
falsely. One day, they make the following statements to each other:
A: B never speaks falsely!
B: C is speaking falsely!
C: D is speaking falsely!
D: E is speaking falsely!
E: B is speaking falsely!
A: E never speaks falsely!
E: C is speaking falsely!
Who are moral saints and who are normal people? Justify your answer.
(4 marks)
6. Students X, Y and Z are good at logical reasoning. They already know that the drawer
has the following 16 playing cards:
Heart (h): A、Q、4
Spade (s): J、8、4、2、7、3
Club (c): K、Q、5、4、6
Diamond (): A、5
Teacher W now picks one card out of these 16 cards from the drawer without X, Y and
Z seeing it. Then W tells the rank of this card (i.e., A, 2, 3, 4, 5, 6, 7, 8, J, Q, or K) to Y
and the suit of this card (i.e., Heart, Spade, Club, or Diamond) to Z. Then he asks Y
and Z whether each of them can infer what this card is just from the partial information they each have. At this point, X hears the following conversation between
Y and Z:
Y: I don’t know what this card is.
Z: I know that you don’t know what this card is.
Y: Now I know what this card is.
Z: Now I also know what this card is.
After hearing the above conversation and thinking for a while, X also knows what this card is.
What is this card? Justify your answer.
(12 marks)
7. Each of the five students, A, B, C, D and E belongs to either the basketball team or the football team (but not both). Suppose that students in the same team, basketball or football, speak truly to each other and students in different teams speak falsely to each other. One day in a party, they make the following statements:
A to B: You are a football team member.
B to C: Both you and D are football team members.
C to D: Both you and B are basketball team members.
D to E: Both you and B are football team members.
E to A: Neither you nor C is a football team member.
Who are football team members? Justify your answer. (12 marks)
我記得有條興爺問過我的,
睇下有冇人識做曬,搵我又答岩既,我請你食野-0-" | | |
| 可能因為下畫睇到西班牙+美國大戰 比andy 叫一叫就好想打波 搞到閉幕都冇睇到 都係我衰 搞到阿康都冇得睇 不過咁耐冇打波 都應該打下 大家一齊見下面 打完波設屋企果陣 andy+屁揚+阿康加埋我阿哥 都講ust 既野 搞到我同雞楓好悶-0- 但最衰係我阿哥 佢同其他人傾計都好地地一但一得番我同佢就係咁串我 唉 都唔知佢諗咩 真係唔識同佢溝通.... | | |
| 好耐冇打XANGA, 我太懶啦~ 好耐冇見方包LU 弓起佢升到上UST 本會約左琴日食野 但琴日打緊8號風球, 唯有改後一日 冇見佢咁耐都係同之前差唔多 不過傾下計 又好似成熟左D 我 + 伍啟 + 子揚 +方包 去左食PIZZA HUT 之後去左睇 MUMMY 3 坐得太前 D聲好勁 睇完覺得有少少似 之前果兩集 只不過轉左中國版 不過當中都有唔少笑位, 還可以 個個都入U LU 唔知我又得唔得呢~~ | | |
| 出左GPA, 得3.2 又同 sem one 一樣 唔係咁開心 因為有3.3以上 先有d機入到degree
今晚同阿康,王頁,雞楓,雄爺,wil神 打波
打到冇曬力
今晚一定訓得着啦-0-
要快d忘記gpa既傷心事
努力搵番份暑期工算~~~~
下個sem再加幾把勁 | | |
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