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Thread: Daily puzzles/problems.

  1. #616
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    A number with two digits is equal to five times the sum of its digits. If you add 9 to the number, the order of its digits is reversed. What is the number?

  2. #617
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    Quote Originally Posted by billl View Post
    Actually, there is way in which a farmer could have doubled the area of his four-sided enclosure without the addition of any hurdles. If he had begun by enclosing the first 20 sheep with the enclosure's four sides in the shape of a parallelogram with corners set at 45 and 135 degrees, he could double the area of the enclosure simply by shifting the four sides into the shape of a rectangle (ie. setting all the corners at 90 degrees).
    Except that he didn't know when he bought the hurdles that he'd buy more sheep, so he'd have been unlikely to have arranged the hurdles in such a way that.... Actually I'm not sure we want to get into the possible motives and geometrical inventiveness of the fictional farmer...

  3. #618
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    Quote Originally Posted by jajdude View Post
    a number with two digits is equal to five times the sum of its digits. If you add 9 to the number, the order of its digits is reversed. What is the number?
    45...

  4. #619
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    yeah, too easy.

  5. #620
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    It's an interesting one, and a little easy is a nice change of pace.

  6. #621
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    Quote Originally Posted by billl View Post
    Actually, there is way in which a farmer could have doubled the area of his four-sided enclosure without the addition of any hurdles. If he had begun by enclosing the first 20 sheep with the enclosure's four sides in the shape of a parallelogram with corners set at 45 and 135 degrees, he could double the area of the enclosure simply by shifting the four sides into the shape of a rectangle (ie. setting all the corners at 90 degrees).
    Quote Originally Posted by MarkBastable View Post
    Except that he didn't know when he bought the hurdles that he'd buy more sheep, so he'd have been unlikely to have arranged the hurdles in such a way that.... Actually I'm not sure we want to get into the possible motives and geometrical inventiveness of the fictional farmer...

    Whereas all the above is true, jajdude was able to find the sheep in amongst all that wool.

  7. #622
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    Mpe od yjr eomyrt pg pit fodvpnyrmy. ,sfr h;ptopid si,,rt nu yjod dpm pg Uptl/

  8. #623
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    smf s;; yjr v;pifd yjsy ;pit#f i[pm pit jpidr,
    Last edited by prendrelemick; 03-19-2011 at 04:22 PM.

  9. #624
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    s jptdr" s jptdr"

    (smf dp pm)

  10. #625
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    Shall we say this one's solved, in which case I'll give the solution - or would others like to have a go at it, although Mick'll be taken as the winner?

  11. #626
    Registered User billl's Avatar
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    Here's my lame assent to Mick's victory:

    http://www.youtube.com/watch?v=y_PZPpWTRTU

  12. #627
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    Yeah, alright.

    Mpe od yjr eomyrt pg pit fodvpnyrmy. ,sfr h;ptopid si,,rt nu yjod dpm pg Uptl/
    Now is the winter of our discontent, made glorious summer by this son of York.

    Typed using the key to the right of the correct one on a standard QWERTY. Mick responded using the key to the left of the correct one.

  13. #628
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    next one Mick?

  14. #629
    Registered User prendrelemick's Avatar
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    Its another one of these. BUT this time here are the rules.

    Fill the empty squares with numbers that will make the across and down calculations produce the results shown along the bottom and far right. The numbers 1 -9 must appear once only. The calculations should be performed from top to bottom and from left to right (rather than strict mathematical order)



  15. #630
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    may be wrong
    Last edited by jajdude; 03-22-2011 at 07:52 AM. Reason: I'm dumb

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