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    For all y'all Math Geeks >:D

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    Ranger 50

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    For all y'all Math Geeks >:D

    Post by Ranger 50 on Mon Oct 31, 2011 8:55 am

    Here's a lil brain tester.

    An automatic light switches on at 18:00, remains on for a whole number of minutes, then switches off and remains off for three times as long as it was on. Then it switches on again, repeats the cycle with the same periods as before and continues. It is seen to be off five seconds before 18:11, to be on five seconds after 21:03 and on again at 22:15. Was it on or off at 22:18? Give your reasons.
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    pipoca77

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    Re: For all y'all Math Geeks >:D

    Post by pipoca77 on Mon Oct 31, 2011 8:57 am

    1 sec into it i gave up
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    Ranger 50

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    Re: For all y'all Math Geeks >:D

    Post by Ranger 50 on Mon Oct 31, 2011 8:58 am

    D'aww Pippykins I iz berry disappointed =l
    You shuld try it. Easier than it looks :)
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    Xin

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    Re: For all y'all Math Geeks >:D

    Post by Xin on Mon Oct 31, 2011 12:33 pm

    I don't even know why I clicked on this topic...
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    Sai

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    Re: For all y'all Math Geeks >:D

    Post by Sai on Mon Oct 31, 2011 2:42 pm

    An automatic light switches on at 18:00, remains on for a whole number of minutes, then switches off and remains off for three times as long as it was on. Then it switches on again, repeats the cycle with the same periods as before and continues. It is seen to be off five seconds before 18:11, to be on five seconds after 21:03 and on again at 22:15. Was it on or off at 22:18? Give your reasons.

    Interpretation of given info=
    e.g. initial time 18:00 ----(after remaining turned on)18:x----- (after it remained turned off)18:4x----
    where x = amt of time it was on initially.

    (#of cycles /hr not mentioned)

    *teh; meh is finding a flaw in wording of the question. It's quite difficult to answer ur question with the limited info u provided. Clarify if the "It is seen to be off five seconds" or "to be on five seconds" and so forth are inclusive of the given condition of the cycle (cuz it really wont make sense if it did) or simply an external factor. If the latter is the case, the question needs to provide the # of cycles of on/off per hour. After that getting to the answer is like *snap* 1. .2 ...3. boom.
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    Ranger 50

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    Re: For all y'all Math Geeks >:D

    Post by Ranger 50 on Mon Oct 31, 2011 8:04 pm

    No, the question is entirely do-able with the wording given.
    If you have a heart for mathematics then maybe you'll ponder over the question, and maybe you'll discard the topic and look for something else. Either suits me. But trust me, it's a question I managed to do after hours of thinking. Yep it hurts, but hey it's good to feel you accomplished something.
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    NKDZ

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    Re: For all y'all Math Geeks >:D

    Post by NKDZ on Tue Nov 01, 2011 5:06 am

    e_e

    It no wurks D: I tried it with 1-10 mins.
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    Ranger 50

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    Age : 21

    Re: For all y'all Math Geeks >:D

    Post by Ranger 50 on Tue Nov 01, 2011 9:51 am

    Trust me babez, it duz. Trust me. Likesrs dis shet works. Trust me.
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    NKDZ

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    Re: For all y'all Math Geeks >:D

    Post by NKDZ on Wed Nov 02, 2011 3:50 am

    I have a heart for maths but unfortunately I'm shit at it.
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    Sold Out
    Admin

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    Re: For all y'all Math Geeks >:D

    Post by Sold Out on Fri Nov 04, 2011 10:04 am

    Oh sheesh, I'll take a look at it when I have the time and am completely bored...

    nah. I'll google the answer. Fuck maths, got enough of that already.


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    Xin

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    Re: For all y'all Math Geeks >:D

    Post by Xin on Fri Nov 04, 2011 12:16 pm

    Sold Out wrote:Oh sheesh, I'll take a look at it when I have the time and am completely bored...

    nah. I'll google the answer. Fuck maths, got enough of that already.

    You're turning into me :O















































































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    Ranger 50

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    Re: For all y'all Math Geeks >:D

    Post by Ranger 50 on Sat Nov 05, 2011 11:40 am

    =l Don't think you can get this on Google... You can try if you like though >:D

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