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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 Re: Puzzles and Games » The Professor and the Student » 2013-12-17 00:56:45

You have simply ignored my arguments and presented your own, which I find
invalid and unconvincing.

We certainly do not have to wait until Thursday night to know the test can't be on Friday. We know that at the start already.  For the simple reason that we already cannot possibly imagine the test occurring on the Friday. For obvious reasons. If you ignore the objections that I made in my last post, which are of course that we never know anything and can make no deductions whatsoever.

#2 Re: Puzzles and Games » The Professor and the Student » 2013-12-16 17:21:07

It is true that the professor must be lying.

Everybody has missed the point here. Which they would see if they set up the experiment so that lying was impossible.

The point being that as we cannot know that the professor is not lying, we cannot deduce anything at all.

We cannot know at the end of Thursday that the test will be on Friday, as there may not be a test at all.

And even if we know, somehow, that the professor is not lying, then we still cannot, under any circumstances, deduce that the test will be the next day. A thousand unforeseen events might prevent that.

#3 Re: Puzzles and Games » Word Game #57 » 2013-05-24 03:32:42

Seems to me my post #13 effectively ended this game, so that further tries are out. I don't see an 'a' in all stefy's words... so they fail.

At the moment I don't seem inspired to continue these particular games, I am rather discovering and playing other games, such as the 'mastermind' phrontister referred to. Now I'm tired of mastermind because there is too much luck in it. Castello is my current favourite.
I've also been posting a lot of 'cryptic crossword' clues on Facebook's Cryptic Crossword Society, but I'm giving that a break now as interest in my particular sort of clue (highly unorthodox) has waned.

#4 Re: Puzzles and Games » Code » 2012-04-30 18:29:40

The answer is not 'drake', that much I do remember. I have the answer, but I've forgotten entirely how to get it. So I might as well try to solve it myself... looks difficult even knowing the answer...

#5 Re: Euler Avenue » Gurth's Fractals » 2012-04-15 20:24:08

Notice I'm gradually getting the jaggies smaller...

#6 Re: Euler Avenue » Gurth's Fractals » 2012-04-15 20:21:21

Some more fractal eye candy:


#7 Re: Euler Avenue » Geometrical Dissection: the 3 square problem » 2012-04-15 20:10:08

Here's a pretty picture to whet your  appetite:


It's only about 1000 years old!

#8 Re: Puzzles and Games » Word Game 242 » 2012-04-08 20:24:10

anonimnystefy wrote:

Hi gb


None right here, anonimny.
Sorry about the delay in replying!
See my reply to phrontister for his words which are all good!

#9 Re: Puzzles and Games » Word Game 242 » 2012-04-08 20:13:41

phrontister wrote:

Hi gurth,


Phron, I only just now got the email notifying me of this post!

You are spot on: go to the top of the class! (again)

#10 Puzzles and Games » Word Game 242 » 2012-04-01 18:55:27

Replies: 8

Here's a list of five words:


What do these words have in common?

If you think you may have figured it out, please submit WORDs which you think may belong to this group, to test your idea.
A maximum of 10 words per player per day, please. I'll add all correct words submitted to the list.

Please don't disclose what your idea is, as that may spoil the game for others.

This game is similar to #66, only harder I think. For the reason that there are fewer correct words.

Have fun!

#11 Re: Puzzles and Games » Word Game 23c » 2012-04-01 18:45:55

Well, phrontister, it looks as if you have now run out of these puzzles, having solved them all, so I'm putting on a new one today: #242. Which see.

#12 Re: Puzzles and Games » Word Game 23c » 2012-03-31 05:03:20

phrontister wrote:

Hi gurthbruins,


#13 Re: Puzzles and Games » Word Game 23c » 2012-03-31 03:59:38

anonimnystefy wrote:
anonimnystefy wrote:

to gb

look at afroditi forum!

I saw, stefy. And I did: your answers are there.

#14 Re: Puzzles and Games » Word Game 23c » 2012-03-31 03:29:09

Yup, phron, I missed, or would have missed, your reference to dependent vectors and independent functions: the most brilliant so far.
Very nice!

My new word - now two words - have also been hidden among the others.

#15 Re: Puzzles and Games » Word Game 23c » 2012-03-31 03:11:23

I'd say not quite, we have wasps and a feline, maybe it's quid pro quo?

#16 Re: Puzzles and Games » Word Game 23c » 2012-03-31 03:02:21

That's it, phron! Three bags full! Love STING and especially FELINE

#17 Re: Puzzles and Games » Word Game 23c » 2012-03-31 00:47:12

Alice just solved this on my afroditi forum, first person ever, without sight of DO and FE - I hadn't added them there yet.
So it can be done!

#19 Re: Puzzles and Games » Word Game 23c » 2012-03-30 19:31:30

hi stefy.

No correct words among that lot. Trouble is there are so few - I'm going to run out of them soon.

I'm using SOWPODS as my referee this time. I'd have maybe liked to accept "am", but SOWPODS says it won't do.

I'll add some words : the list is now


#20 Re: Puzzles and Games » Word Game #66 » 2012-03-30 19:11:20

anonimnystefy wrote:

So,what's the solution to this one?

As phronister is kindly continuing this game for a while, and since I don't want the solution made public (for obvious reasons, it makes it impossible to continue the game elsewhere as well as here), please advise whether you would like me to PM the solution to you, or whether you want to play on with phron and ws.

#21 Euler Avenue » Geometrical Dissection: the 3 square problem » 2012-03-28 19:16:03

Replies: 2

Part 1

(a necessary preliminary to Part 2, which will contain the real challenge)

Show how to dissect a square with area A into n pieces which can be assembled to make 3 separate squares, each with area A/3.
Any interesting n will be nice to see,  but the aim is really to see with how few pieces it can be done.

No gimmicks or 'tricks' are needed.

#22 Re: Puzzles and Games » The Professor and the Student » 2012-03-26 22:51:17

Interesting! I myself am getting tired of this woolly problem, it seems less appealing now. I think I'll abandon it, though it has been interesting. I am preparing to launch a proper mathematical problem, one with a definite solution and no semantics, shortly.

#24 Re: Puzzles and Games » The Professor and the Student » 2012-03-23 22:16:53

Bob Bundy's next-week posts bid fair to make the most exciting event in decades.

I feel free to make the following predictions already:

1. I personally will certainly not know anything in advance.

2. Neither will Bob, regardless of his present or future intention: there is no way he can guarantee the truth of "But I will post.", except as a statement of present intent and not future reality.

And if we start hedging statements with "if"s" or unwarranted assumptions, then we'll be back to square one.

Also I shall not be in the least surprised if the test falls on the Friday, and nobody knows it in advance. Of course they may claim to have known after the event, but that will be a hollow claim.

Just my take!

#25 Re: Puzzles and Games » The Professor and the Student » 2012-03-23 21:59:29

bobbym, I took the liberty of reading your hidden text - I suppose that is not a heinous crime.

I agree with your logic couched in wisely guarded and provisional terms, not your conclusion that Friday is out (as I have stated in post #53), and with your perceptions that this is not necessarily a matter of logic at all, having a clear answer. The vagueness of the terms used by, and the situations described by, the student, allow for different points of view.

The subject has revealed Bob's inventiveness, the envelope method and now this simulation of the actual event in real life - way to go!!!

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