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Posted: 20-07-2005 17:46
by Nicky
Nickspoon got mine right but the wrong way
I said to make A cube not to make cube.
But yes you do add those three there to make the number 8 which is a cube number
2^3
Posted: 20-07-2005 17:48
by Kisa
He made "a cube"!
Posted: 20-07-2005 17:50
by Nicky
Yes
but thats not what it meant
This one is GREAT
What is the next number?
12,215,308,523,345,916
Posted: 20-07-2005 18:33
by Kisa
Hmmmm ... it's 12215308523345916 = 2 * 2 * 3 * 73 * 1367 * 3907 * 2610889 (a nice big prime number
), but that doesn't help me much ...
Posted: 20-07-2005 18:35
by Kisa
12,215,308,523,345,917?
Posted: 20-07-2005 18:35
by Nicky
Its so obvious
Yes thats the answer
Posted: 20-07-2005 18:38
by frkyjenn
Ok, I'm confused.
Explain it to me please.
Posted: 20-07-2005 18:39
by Nicky
Add one to the very large number
Posted: 20-07-2005 18:40
by Nicky
Ok this one is EVIL
Which number is the odd one out?
1553 1892 2137 3649 6397 4085 2464 4585 4868 4276
Posted: 20-07-2005 18:41
by frkyjenn
I hate numbers
Posted: 20-07-2005 18:42
by Nicky
Ill post a wordo ne once this ones been got
Posted: 20-07-2005 18:44
by Kisa
6397 > 5000
Got it!
All the numbers are built up like this:
n1n2 = n3 * n4
and 4585 doesn't fit (45 != 8 * 5)
Posted: 20-07-2005 18:46
by Nicky
No thats too vague you could use the same reasoning for any of the other numbers
Posted: 20-07-2005 18:47
by Kisa
No, that works for every other number in the list:
1553: 15 = 5 * 3
1892: 18 = 9 * 2
2137: 21 = 3 * 7
3649: 36 = 4 * 9
6397: 63 = 9 * 7
4085: 40 = 8 * 5
2464: 24 = 6 * 4
4868: 48 = 6 * 8
4276: 42 = 7 * 6
Posted: 20-07-2005 18:48
by frkyjenn
It's way to early in the day for me to be doing maths.