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mystical_goat


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« on: Friday, January 18, 2019, 17:09:21 »

You build a pyramid of cubes with 1 cube on the top layer, 4 together on the 2nd, 9 on the 3rd, etc. There are 1 cubes in a 1 layer pyramid, 5 in a 2 layer, 14 in a 3 layer etc. How many cubes in an n layer pyramid?
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Ardiles


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« Reply #1 on: Friday, January 18, 2019, 17:13:21 »

I'll have a go at this later.  Love this stuff.  I know someone else will get there first though.  Smiley
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Gwah


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« Reply #2 on: Friday, January 18, 2019, 17:19:47 »

I made it (2n^3 + 3n^2 + n)/6

I may be wrong.

(Sorry Ardiles)
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Do you often sing or whistle just for fun?
Reg Smeeton
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« Reply #3 on: Friday, January 18, 2019, 17:23:05 »

 Is it to do with Pascal's triangle and pyramid?   
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Combe Up


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« Reply #4 on: Friday, January 18, 2019, 17:30:41 »

Is the triangle anything to do with Oxford United's ground?
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4D


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« Reply #5 on: Friday, January 18, 2019, 18:09:10 »

Thames Valley triangle?
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Reg Smeeton
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« Reply #6 on: Friday, January 18, 2019, 18:27:40 »

Thames Valley triangle?

Is that like the Winnersh Triangle which is something that's always puzzled me.
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Lemis


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« Reply #7 on: Friday, January 18, 2019, 18:35:32 »

I made it (2n^3 + 3n^2 + n)/6

I may be wrong.

(Sorry Ardiles)

You're correct
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Samdy Gray
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« Reply #8 on: Friday, January 18, 2019, 19:02:16 »

Well Googled.
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mystical_goat


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« Reply #9 on: Friday, January 18, 2019, 19:32:12 »

I made it (2n^3 + 3n^2 + n)/6

I may be wrong.

(Sorry Ardiles)

Amazing!

That's way beyond my capabilities.

Thank you.
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suttonred


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« Reply #10 on: Friday, January 18, 2019, 19:55:04 »

What the holy hell are you lot talking about? Tits, music, football, films, and tits should be the topics.. I think the word bra prompted at least 2 of those.
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Ardiles


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« Reply #11 on: Friday, January 18, 2019, 20:01:40 »

Promise I haven't looked at the posts above before posting.   Cheesy

I get:

(2n3+3n2+n)/6
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Ardiles


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« Reply #12 on: Friday, January 18, 2019, 20:02:49 »

I made it (2n^3 + 3n^2 + n)/6

I may be wrong.

(Sorry Ardiles)

Good work!!
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suttonred


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« Reply #13 on: Friday, January 18, 2019, 21:19:37 »

Is that like the Winnersh Triangle which is something that's always puzzled me.

Should be called winnersh dead zone. I got off a national express for a wee  there on the way back from a game in London when I lived in Reading. The coach driver decided he could do with one less drunken passenger and left me there. Took me ages to get home. Nothing there of human interest.
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Reg Smeeton
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« Reply #14 on: Friday, January 18, 2019, 21:30:32 »

Should be called winnersh dead zone. I got off a national express for a wee  there on the way back from a game in London when I lived in Reading. The coach driver decided he could do with one less drunken passenger and left me there. Took me ages to get home. Nothing there of human interest.

So a bit like the Bermuida Triangle for human interest....
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