Analytical Question 2 help!!!!!
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Garfield is a strange liar. He lies on six days of the week, but on the seventh day he always tells the truth. He made the following statements on three successive days:
Day 1: I lie on Monday and Tuesday.
Day 2: Today, its Thursday, Saturday or Sunday.
Day 3: I lie on Wednesday and Friday.
On which day does Garfield tell the truth???? -
on the seventh dayOriginally posted by Seifer28:Garfield is a strange liar. He lies on six days of the week, but on the seventh day he always tells the truth. He made the following statements on three successive days:
Day 1: I lie on Monday and Tuesday.
Day 2: Today, its Thursday, Saturday or Sunday.
Day 3: I lie on Wednesday and Friday.
On which day does Garfield tell the truth???? -
Lol, y dun i mail u my notes ...
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lol analytical skills? my mod this sem man...Originally posted by gd4u:Lol, y dun i mail u my notes ... -
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thursday?
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Lmao same as me aso sia...Originally posted by Xtrider:lol analytical skills? my mod this sem man... -
im also having it this sem.....
1st lesson n im pawned..... -
lol same sch? sh1t mines tml wish me luck...Originally posted by Seifer28:im also having it this sem.....
1st lesson n im pawned..... -
isn't tt already given?Originally posted by Xtrider:on the seventh day -
let me see.....
the school tat had the 24 hour library???? -
day2?Originally posted by Seifer28:Garfield is a strange liar. He lies on six days of the week, but on the seventh day he always tells the truth. He made the following statements on three successive days:
Day 1: I lie on Monday and Tuesday.
Day 2: Today, its Thursday, Saturday or Sunday.
Day 3: I lie on Wednesday and Friday.
On which day does Garfield tell the truth????
or is it? -
now dun think so...but was so during exam periodOriginally posted by Seifer28:let me see.....
the school tat had the 24 hour library???? -
crap...
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dood r u from smu? cos i am..Originally posted by Xtrider:now dun think so...but was so during exam period -
opps.....identity exposed....
haha -
lol ur from smu? twc, as, ct, bgs, stats?Originally posted by Seifer28:opps.....identity exposed....
haha -
telling the truth on day 3, which is a tuesday
think so -
wow, im solving a SMU question
now i really wonder if i got it right -
I believe the ans is TUESDAY.Originally posted by popmynutsy:thursday? -
lets say day 1 he lies, so does it mean he is telling the truth on monday and tuesday? doesnt make sense lolOriginally posted by Seifer28:Garfield is a strange liar. He lies on six days of the week, but on the seventh day he always tells the truth. He made the following statements on three successive days:
Day 1: I lie on Monday and Tuesday.
Day 2: Today, its Thursday, Saturday or Sunday.
Day 3: I lie on Wednesday and Friday.
On which day does Garfield tell the truth???? -
monday lie and tuesday lie.Originally posted by bladez87:lets say day 1 he lies, so does it mean he is telling the truth on monday and tuesday? doesnt make sense lol
the negation is monday tell the truth or tuesday tell the truth.
from de morgan's theorem. -
Lets take day 1 as the truthful day. This means that day 2 and day 3 are lying days. Day 2 is a lying day which means day 2 must be a monday, wednesday or a friday. Day 3 is a lying day which means either Wednesday or Friday is a truthful day.Originally posted by Seifer28:Garfield is a strange liar. He lies on six days of the week, but on the seventh day he always tells the truth. He made the following statements on three successive days:
Day 1: I lie on Monday and Tuesday.
Day 2: Today, its Thursday, Saturday or Sunday.
Day 3: I lie on Wednesday and Friday.
On which day does Garfield tell the truth????
If Wednesday is the truthful day, it is Day 1. Which means day 2 has to be a thursday but look above? Day 2 must be a monday, wednesday or friday. so Wednesday is not the truthful day.
If Friday is the truthful day, which is Day 1, Day 2 is a saturday, look above again. Not possible so Friday is not the truthful day.
Combination of day 1 truthful and day 3 lying is not possible, therefore concluded that Day 1 is NOT the truthful day.
Day 2 as truthful day? Means day 1 and day 3 are lying days. Day 1 is a lying day which means either monday or tuesday is a truthful day. Day 3 is also a lying day which means either Wednesday or Friday is a truthful day. Therefore, day 2 being a truthful day is not possible.
This means Day 3 is the truthful day. This means day 1 and day 2 are lying days. Day 1 is a lying day which means either monday or tuesday is a truthful day. Day 2 is a lying day which means day 2 must be a monday, wednesday or a friday.
Now can see already. Day 3 is either a monday or tuesday because day 1 is a lying day. If day 3 is a monday, that makes day 2 a tuesday but its not.(see above). If day 3 is a tuesday, that makes day 2 a monday, which is possible(see above), and day 1 a sunday.
Therefore, the conclusion is that Garfield tells the truth on Day 3 which is a Tuesday. -
To TS:Originally posted by Seifer28:Day 1: I lie on Monday and Tuesday.
Day 2: Today, its Thursday, Saturday or Sunday.
Day 3: I lie on Wednesday and Friday.
I believe dinky1409 is pretty clear on the method and explanation. Notice dinky1409 tackled the problem from the day 1, 2 and 3.
Alternatively, you can just enumerate through all the days of the week and slowly eliminate.
In short, you just take day 3 to be the day you are enumerating through. which means day 3 is the day he is telling the truth. this will in turn means day 2 and day 1 statements must be false.
so if day 3 is sunday, day 2 statement is true .. contradiction.
so if day 3 is saturday, day 1 statement is true .. contradicition.
so if day 3 is friday, day 2 statement is true .. contradiction.
so if day 3 is thursday, day 1 statement is true .. contradiction.
so if day 3 is wednesday, day 1 statement is true .. contradiction.
so if day 3 is tuesday, day 2 statement is false and day 1 statement is false.
so if day 3 is monday, day 2 statement is true .. contradiction.
remember .. the key is to find a contradiction. -
Aiya.. so many boliao really ans this question. lolx... anyhow Sunday is the truthful day la! since Garfield dun lie on the seventh day of the week...