2, 2, 9
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2, 2, 9
Yep. There are two possible combination that give multiplied 36 and sum 13:Quote:
Originally posted by Gabriel Fleseriu
2, 2, 9
1,6,6
and
2,2,9
Personally I think being 6 does not mean you cannot play piano though it would be exceptional if you could. Your turn Gabriel.
Nope, 1, 6, 6 is wrong.Quote:
Originally posted by Simon666
Yep. There are two possible combination that give multiplied 36 and sum 13:
1,6,6
and
2,2,9
Personally I think being 6 does not mean you cannot play piano though it would be exceptional if you could. Your turn Gabriel.
There is only one "oldest" daughter ;)Quote:
the oldest daughter plays piano
I'm thinking on a quiz to post in the meantime :)
Even in case of twins there is always an oldest daughter, even though the difference may be just a couple of minutes. So 1,6,6 is not excluded. You know I am a 6 lover, don't discredit the 6's! :D ;) :pQuote:
Originally posted by Gabriel Fleseriu
There is only one "oldest" daughter ;)
Suppose you're standing in front of a mirror. How tall must the mirror at minimum be for you to be able to see all of your body in the mirror (correct mirror placement w.r.t eyes assumed)?
Height/2?Quote:
Originally posted by Gabriel Fleseriu
Suppose you're standing in front of a mirror. How tall must the mirror at minimum be for you to be able to see all of your body in the mirror (correct mirror placement w.r.t eyes assumed)?
Correct. Was it a guess, or can you explain why?
No guess. I assumed the mirror at infinite distance away. I'll attach a bmp. One moment.Quote:
Originally posted by Gabriel Fleseriu
Correct. Was it a guess, or can you explain why?
You don't need that assumption. See attachement.Quote:
Originally posted by Simon666
No guess. I assumed the mirror at infinite distance away. I'll attach a bmp. One moment.
I know you don't need it, but it makes it easier to reason and think out for me. Otherwise you would also have to reason how big the mirror would need to be if you did not place it vertical but under an angle and whether this would be shorter, but at an infinite distance things are easier to think out for me. Anyway, enough about the strange loopholes of my brain (precaution for solar: yes, I have one ;) ), a simple question then: why is the sky blue? Come on Xeon, even you can do this.
I think I know this one, but I'm not sure if I can explain it in English... :D
The sun light must travel from the Sun to the Earth, suffering from scattering during its trip. The air molecules in the terrestrial atmosphere scatters the blue and violet components of the white sun light and let the rest pass without dispersion, because of the size of these molecules (smaller than the red and orange components wave lenght, but similar to the wave length of the blue component). The violet component suffers from scattering more than the blue one, but the human eye is more sensitive to blue, so we see the sky blue and not violet.
That's the Rayleigh effect, I think.
I hope I have explain myself more or less well in my strange English.. ;)
Correct, although red light is also scattered by dust and molecules, but to a much smaller degree. Your turn. :)Quote:
Originally posted by saturno7
The sun light must travel from the Sun to the Earth, suffering from scattering during its trip. The air molecules in the terrestrial atmosphere scatters the blue and violet components of the white sun light and let the rest pass without dispersion, because of the size of these molecules (smaller than the red and orange components wave lenght, but similar to the wave length of the blue component). The violet component suffers from scattering more than the blue one, but the human eye is more sensitive to blue, so we see the sky blue and not violet. That's the Rayleigh effect, I think.
Ok, this is a very simple one, and probably most of you already know the answer, but I like it. It's a logic problem (my favourite ones):
You're in a prison and you try to escape. After running along some corridors, killing dragons and big snakes and things like these, you arrive to a room with two doors, and one guardian in front of each one of them. You know that one of them always tells the truth, while the other always lies, but you don't know which one lies and which one tells the truth. One of the doors will take you to freedom and the other back to the prison for the rest of your life. And, finally, the guardian that tells the truth is NOT supposed to be in front of the good door, or viceversa, the right one could be any of them.
You have permission to ask just ONE question to ONE of the guardians, and then choose the door you are going through. Which one and only question should you ask?.
I'm sure that you're going to be very quick in answering this one, is a well known question. :p :)
So current rating is:
1. Saturno Gabriel & Simon
2(last) all the others
question to any one of them:Quote:
Originally posted by saturno7
Ok, this is a very simple one, and probably most of you already know the answer, but I like it. It's a logic problem (my favourite ones):
You're in a prison and you try to escape. After running along some corridors, killing dragons and big snakes and things like these, you arrive to a room with two doors, and one guardian in front of each one of them. You know that one of them always tells the truth, while the other always lies, but you don't know which one lies and which one tells the truth. One of the doors will take you to freedom and the other back to the prison for the rest of your life. And, finally, the guardian that tells the truth is NOT supposed to be in front of the good door, or viceversa, the right one could be any of them.
You have permission to ask just ONE question to ONE of the guardians, and then choose the door you are going through. Which one and only question should you ask?.
I'm sure that you're going to be very quick in answering this one, is a well known question. :p :)
Is the correct door behind the thuth-telling guardian?
yes - take this door
no - take the other door