PROBLEM 20
First i'll turn the first switch and i'll wait for 15 - 20 mins after that i'll turn the second one and i'll open the door if it the the light which is on will be for the second switch and the one which is warm or hot for the first swith and the one that is of for the last switch which i kebt it off.
Yasmeen Hatem
Class B
Problem 20 - Switches and Bulbs
First I will switch on two switches than I will wait few mintues than I will switch off one only than I will go to anther room
the one is warm will be the first one and the second one will be opened and the third one will be that I didnt tach it.
Habiba
c
11:33 pm April, 11
Problem 6
GREAT idea I agree with u although that her cakes are not …..so much
but it's okey
we'll accept it for now
untill we find something harder for her to do hehehehe !!
Yasmeen
Class B
*****
problem no 6
That's a hard one hehe… :)
but I agree with the 233 chocolate cakes, she really makes good ones..
-Fatima
section B
Ghadeer, I am sure you have checked on the Internet, and you have given the solution to everyone.
You deserve a penalty of -999999.123 points + 233 chocolate cakes + … zero yellow cake.
-Kevin
i think the shape will be like this
XXX
*Ghadeer
*class c
*****
Problem 6
Are you sure that we can't flip them?
After having spent 5 hours thinking about Fatma's theory of the problem, I have decided to choose two winners this week. Fatma, you could write a book about this problem … :)
1- Ghadeer: who provided the good question
2- Fatma: for her great analytical skills
Indeed, the question was: Which of the two roads leads to your village?
For those who thought there was a trick in relation to the he/she confusion, wrong choice. It was simply me making a typing mistake when copying the problem in the website.
… I should maybe take some more typing lessons … anybody knows a good software to practice?
Problem 5
I think that the one who is telling the story from the lie teller because the story tells that there was a man in the begining then it says ( she doesn't)
so the teller is from the lie teller village!!!!
I don't know why do I think so
but there is a trick and I'm sure about that !!!
Yasmeen
Class B
*******
Problem5:
I have question and it may my question will be the answer?
First you say a man at the end you say ( She does not know from which tribe the native comes.) How came?
Habiba
c
problem 5:
the question is: which of the two roads leads to your village? the native should then point to the vegetarians village even if he wasnt a vegetarian
i cant think of sth else i remember it was like that lol
*Ghadeer
*class c
****
Problem 5:
the man asks the native , if i walk down this road will this take me to the villiage, would u say yes? the native has to give the right answer because if he was a cannibal he would have to say yes, therefore the man knows which path to take, by the way he asked the question.
*Ghadeer
*class C
Problem 5:
Thinking of this problem logically you would find that we are dealing with two Ideas:
Truth and lies
As for me, I think that we could ask :
" Does this way leads to the vegetarian truth tellers vellage? "
we always ask such structured questions when we guess and just wait for an answer to agree or disagree with the question.
In the case of the explorer such question would force the native to answer directly with either yes or no .
Then we have two situations:
1.IF the native was a truth teller:
IF the explorer put in his mind that this native is a truth teller, he would follow the way that the native will say yes as an answer for it without any doubts, and he would go the other way if the answer was no.
Explanation: truth teller don't hesitate in telling the truth. They always talk honestly and whenever they talk people sould not have doubts because such personalities always tell facts and real things.
2.IF the native was a lie teller:
IF the explorer put in his mind that this native is a lie teller, he would follow the way that the native will say yes as an answer for it and he would go the other way if the answer was no too.
Explanation:liars always try to change facts, liars try to accept the truth_ tell the truth _ and people know that thoes always tell lies so, they would just reverse their answers to reach to the truth.
And if the native was a liar, he would just admit the truth because he is sure that people would follow the opposite knowing that he always lies.
TO SUM UP:
regardless of the native being a liar or a truth teller, the explorer should follow what he says because the structure of the question makes the truth clear enough .
if the native was a truth teller he would tell the truth and if he was a liar he would tell the truth so the explorer would think that he is a liar and go opposite direction away of the right one.
Fatima-section B (adjusted)!!!!
Any type of question is fine as long as it remains a simple question (which means your question should not be the combination of two sub-questions.
The native is from one of the two tribes. We don't know from where, which makes all the difficulty of the problem
—Kevin
I know that my Question sounds silly!!
but
what kind of questions that we can ask_ I mean anything except for (and, or ..etc) ?
and…
we are using english here, right!
and that Native that is standing beside the fork of the two roads…
where is she from? is she from the truth teller vellage or the lie teller vellage?
I have the right idea till now but I need you to answer thoes questions for me so I can post my answer
Thank you!
fatima
section_B
problem no 4
Ghadeer, great explanation. You win this week. Sorry Yasmeen, but your explanation is not clear enough. -Kevin
the bill was 25….for three friends…. each one should pay 8.3
but each one paid 10 and get 1 , so each one paid 9
9 - 8.3 = 0.7
this means that each one paid extra 0.7
if we calculate for the three
0.7 * 3 = 2
so….they all paid extra 2$…and this is what the waiter took…
- Ghadeer
- Class c
******
Problem No.4
Salaam,
I'll try to solve it as I think
if we calculate it this way :
they all paid $25 , ok
then the waiter returned $ 3 , so 25 +3 = 28
and he took $2 as a tip
so,, 28 + 2= 30
& this way there will not be a missing dollar
I don't know if it is right
but I tried
Yasmeen
Class B
******
I accept this answer. Very good job and very good explanations.
Congratulations.
-Kevin
Problem 3:
I'm really not sure about my answer, but at least I'll have the honor trying…
First of all. If you concentrate on the first triangle, you would notice that the upper line (hypotenuse) is not straight which means that the first triangle wouldn't be a triangle anymore.
Note: print out the two triangles to notice the difference between them ( be careful
and don't forget to include the black lines).
- The Green triangle above in the first picture has a base of about 5 squares and a height of 2 squares, and to maintain the slope (hypotenuse) in the top of the large triangle (pic1) we need the red triangle to be at least 3 squares height and around 7 base squares. But unfortunatly, the red triangle has a base of 8 squares which lead us to the breack between the (Green triangle and the red triangle_ pic1) That was covered neatly with extra black bold line.
- The second picture has the same trick of the red and the green triangles, but because they replaced each other, the effect of the breack disappeared because they maintained the right slope for the (hypotenuse) of the second picture_large triangle below.
To sum up, the square that occured in the second picture below (as I think,I'm really not sure) is due to calculating the total loss in the first picture that occurs along the large(hypotenuse) and finding that it is equivalent to an empty square. (If we assumed that both pictures of the triangles have the same area).
Note: the word that is seen in bold (hypotenuse) is found by (Google translate) I know the meaning in Arabic and translate it in English, so excuse me if it was wrong..I mean by it the third line that completes a triangle from above.
Fatima-section B
Did you mean that there are missing squares in green tringle in second drawing but in the first drawing there are all squares
Habiba..
You are right Habiba, here is the trick, you are getting very close to the answer. So who can tell precisely where the missing area of the second drawing is in the first drawing?
-Kevin
Problem 3:
Finally I get the answer
ah! after I squeeze my brain.
It was very difficult but the answer can be easy and can be difficult
The eaiest answer is that if you see carefully to tringles, you will fine that
the angles of the tringles are little change. They are not the same in the both pictures.
they little increase and they hidded this exters by a black line.Also you can discover this if you
see carefully to the squares above the large tringle.I dont how to describe but I find that the tringles
are not the same they are little big so they create this hole.
The difficult answer maybe we can use in the math way. Maybe we can calculate the angles to fine the
answer but I dont know how.
Habiba Abood Jan,24,2008 11:15pm
class: C
Problem 3:
the ques is from where the hole came from?
its easy
someone put it there lol
:D
class c
-Thanks for the great answer … Kevin :)
Problem 3
because we changed the arrangement of pieces and the big triangle needs more space or area under it to make large one so we should put the orange and the light green beside each other so we get this hole
fatima hisham
Not clear enough - You need to be more precise. -Kevin
Problem 2
So,I think the answer is = 14 !!
class C
Sorry. Both answers are incorrect. -Kevin
** problem 2 **
I'll try … !!
(the total No of legs= legs of the girls + legs of the cats)
(7x2) +( 7x7x7x4 )
(14 + 1372 =1386 legs)
My Regards : Aida
Problem "2"
I hope it will be correct..
*Each girl has 2 legs ,So seven girls have 14 legs(7×2=14)
*Each bag has "7"big cats,So the total number of Big cats is(7×7=49)
*The number of legs for all of the Big cats is(49×4=196)
*Each big cat has "7" little cats ,so the number of little cats is(49×7=343)
*The number of legs for all little cats is (343×4=1,372)
*So,the total number of legs inside the bus will be the number of girl's legs+Big cat's legs+little cat's legs.
Which is( 14+196+1,372=1,582)
Khadega,
Class"B"…
Problem "2"
I am the saving but I am not sure this time
7 small cats × 4 legs of little cats= 28 legs of little cats
28 legs of little cats ×7 big cats=196 legs of little cats in one backpacks
7big cats ×4 legs of big cats=28 legs of big cats in one backpacks
28 legs of big cats+196 legs of little cats=224 legs in one backpacks
224 legs in one backpacks ×7 packpacks of a girl=1568 legs with one girl
1568 legs with a girl ×7 girls= 10976 legs of all cats wth all girls
10,976+ 14 legs of girls= 10,990 legs in bus plus 2 legs of driver if there is a driver
HABIBA 16.1.2008 8:21 pm
section: c
Problem 1
24 is not the correct answer … try again! - Kevin
khadega ahmed
class"b"
16+8=24
Fatima Al naqar
class"B"
16+8=24
Habiba Abood 2:38 pm 9.1.2008
class"c"
it is easy
24+8=32days
CONGRATULATIONS !!!
32 days is the answer, I hope nobody helped you to find the answer.
