Math Is Fun Forum

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

Okay, here’s a related question.

#9 What do Uruguay, Italy, England, West Germany, Argentina, and France have in common?

And slightly unrelated, but.

#10 What do Mexico, Guatemala, Luxembourg and Singapore have in common?

Last edited by JaneFairfax (2007-04-27 10:41:30)

Stanley_Marsh

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Registered: 2006-12-13

Posts: 345

Re: Jane’s puzzles

Is this some Cryptographical decoding games?

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Numbers are the essence of the Universe

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

Nope. There is no decoding whatsoever.

Devantè

Real Member

Registered: 2006-07-14

Posts: 6,400

Re: Jane’s puzzles

Is factual information required (eg. the population of Uruguay) or are the answers based on how the words are constructed (eg. Uruguay has four vowels)?

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

You’ll kick yourself when I tell you the answers.

Devantè

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Registered: 2006-07-14

Posts: 6,400

Re: Jane’s puzzles

Last edited by Devantè (2007-04-27 19:36:15)

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

Keep on trying.

mathsyperson

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Registered: 2005-06-22

Posts: 4,900

Re: Jane’s puzzles

They are all mentioned in your question.

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Why did the vector cross the road?
It wanted to be normal.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: Jane’s puzzles

I think....
#9 All these nations have reached the finals of the World Cup Soccer at some time or the other.

#10. All these nations have their capital cities in the same name.

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

YES!! You got #10 spot on! (I just realized that Kuwait should also be in the list. Duh.)

Thank you very much, ganesh. It’s so nice to see some sensible answers here at last.

Last edited by JaneFairfax (2007-04-28 20:54:11)

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

#11 What do Norway, Sweden, Myanmar, Austria, Peru, Egypt, Ghana and South Korea have in common?

mathsyperson

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Registered: 2005-06-22

Posts: 4,900

Re: Jane’s puzzles

Huh. I was actually thinking about football for 9, but then I decided it wasn't because Brazil wasn't there. I'm guessing it must be

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Why did the vector cross the road?
It wanted to be normal.

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

Nope.

mathsyperson

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Registered: 2005-06-22

Posts: 4,900

Re: Jane’s puzzles

?

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Why did the vector cross the road?
It wanted to be normal.

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

#12

n (≥ 4) lights are arranged in a circle. You can turn a light on or off by touching it. However, turning any light on or off will also toggle the state of its two adjacent neighbours. (That is, supposing a light is off, the one of the left of it is off and the one to the right of it is on, touching the middle light will turn it on, its left neighbour on and its right neighbour off.)

The n lights are all on. How do you turn them all off?

Last edited by JaneFairfax (2007-05-10 07:29:24)

mathsyperson

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Registered: 2005-06-22

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Re: Jane’s puzzles

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Why did the vector cross the road?
It wanted to be normal.

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

Wow, that was quick!

Devantè

Real Member

Registered: 2006-07-14

Posts: 6,400

Re: Jane’s puzzles

You’ll kick yourself when I tell you the answers.

You fail, I didn't kick myself.

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

#13

A two-digit number P is multiplied by a single-digit number to give Q. When 100+P is multiplied by another single-digit number, the answer is Q−1. Find P and Q.

mathsyperson

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Registered: 2005-06-22

Posts: 4,900

Re: Jane’s puzzles

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Why did the vector cross the road?
It wanted to be normal.

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

That wasn’t too difficult, I hope? I was on the bus the other day when I looked around me and saw those two numbers. I was bored and so I started playing around with those numbers in my head – and came up with a puzzle for them. Heheh.

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

is the working for my last puzzle, by the way, in case you want to know.

Last edited by JaneFairfax (2007-07-07 22:49:40)

JaneFairfax

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Registered: 2007-02-23

Posts: 6,868

Re: Jane’s puzzles

#14

A man has 11 centimetres of a gold bar (of uniform rectangular cross section). He is staying 11 nights at an inn, and the landlord demands 1 centimetre of gold per night as payment. The landlord will not accept back payment or advanced payment – so every night the man must give the landlord exactly 1 additional centimetre of gold: no more, no less. He has only two rusty saws with which to saw his gold bar, and each saw can only be used once.

How does the man satisfy his landlord’s payment requirement by making only two cuts on his gold bar?

Last edited by JaneFairfax (2008-05-22 05:08:54)