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Thread: Fun for the brain II

  1. #1 Fun for the brain II 
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    It looks like my previous thread received no complement, instead people raged at me a great deal.

    So yeah this is another one, I hope people favour it this time.


    1.
    2. Tom and Jake are climbing up stairs. Tom is at the first floor, heading to the forth; Jake is on the fifth, heading to the eighth. Their speed are the same. When Tom reaches the forth, is Jake on the eighth floor?

    3. In a race you exceed the second one, what's your position?
    4. i4n+i4n+1+i4n+2+i4n+3=


    The first to answer all CORRECTLY wins.


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  3. #2  
    Forum Professor wallaby's Avatar
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    and i have no idea what question 3 is asking.


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  4. #3  
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    Quote Originally Posted by Wise Man View Post
    It looks like my previous thread received no complement, instead people raged at me a great deal.

    So yeah this is another one, I hope people favour it this time.


    1.
    2. Tom and Jake are climbing up stairs. Tom is at the first floor, heading to the forth; Jake is on the fifth, heading to the eighth. Their speed are the same. When Tom reaches the forth, is Jake on the eighth floor?

    3. In a race you exceed the second one, what's your position?
    4. i4n+i4n+1+i4n+2+i4n+3=


    The first to answer all CORRECTLY wins.

    question 3.) second
    “The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.”

    Bertrand Russell
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  5. #4  
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    Quote Originally Posted by Wise Man View Post
    It looks like my previous thread received no complement, instead people raged at me a great deal.
    Wise Man, we were only joking

    So yeah this is another one, I hope people favour it this time.
    I will, just as I did the previous Here are my answers:

    1) . This is really a trick question since you think you can multiply the terms under the radical, but I think that doesn't apply to when both are negative. So, I say i*sqrt(2) times i*sqrt(5) = -sqrt(10). Tada.

    2) There's a lot of major details you didn't specify, but I'll assume the very norm of the problem. Yes. They will reach their destinations at the same time (assuming stairway lengths are equal, they began at the same time, etc.)

    3) Looks like a trick question or riddle of some kind. I'm gonna say ... first?

    4) Assuming n is some integer, zero. Because no matter what value for n you have, you will have a sum of i and -i and 1 and -1, summing to 0.
    Last edited by halorealm; August 1st, 2012 at 12:47 PM. Reason: Changed #2
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  6. #5  
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    hmm... Chrisgorlitz answered #3 correctly, and wallaby answered #1,#2 & #4 correctly, halorealm answered #1,#2,#4 correctly, #3 incorrectly.

    It seems none of you answered ALL CORRECTLY.

    #3 is kinda tricky, if you are in a race, if you exceed the second, your original position must have been the THIRD, thus you become the second one afterwards.
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  7. #6  
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    Quote Originally Posted by Wise Man View Post
    #3 is kinda tricky, if you are in a race, if you exceed the second, your original position must have been the THIRD, thus you become the second one afterwards.
    That was a good one, haha. I do understand that. I just didn't know what I was reading. At first I thought it was talking about the race in #2, then I thought it was some question about time ("second 1") in a race or something. I didn't get it so I just threw something out :P
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  8. #7  
    Brassica oleracea Strange's Avatar
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    Quote Originally Posted by Wise Man View Post
    #3 is kinda tricky, if you are in a race, if you exceed the second, your original position must have been the THIRD, thus you become the second one afterwards.
    Not if you also "exceed" (whatever that means) the first as well.
    ei incumbit probatio qui dicit, non qui negat
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  9. #8  
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    maybe the word surpass would be more suitable.
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  10. #9  
    Brassica oleracea Strange's Avatar
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    Quote Originally Posted by Wise Man View Post
    maybe the word surpass would be more suitable.
    Or "beat"? (It still doesn't work, though.)
    ei incumbit probatio qui dicit, non qui negat
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  11. #10  
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    Okay. How about "pass". You pass the car in 2nd. You are now in 2nd place.
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  12. #11  
    Brassica oleracea Strange's Avatar
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    Not if you also passed the guy in first
    ei incumbit probatio qui dicit, non qui negat
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  13. #12  
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    It's ambiguous. It could mean you passed the person who was in second (and is now third) or it could mean you passed the one who is now in second (and was in first).
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