You must be a total geek...

LSPoorEeyorick · 10-25-2006, 07:20 PM

I'm stuck at 18, which looks to me like binary. I don't know binary.

Alex · 10-25-2006, 07:26 PM

Binary is easy, just iterate it once.

0 = 0
1 = 1
2 = 10
3 = 11
4 = 100
5 = 101
6 = 110
7 = 111
8 = 1000

and so on.

In base 10 the right most columns are 1s, with up to nine of them. The second are 10s with up to nine of them. So 89 is 8 tens, and 9 ones. Each column to the left multiplies the previous one by 10.

In binary, each column to the left multiplies the previous by 2. So the rightmost column are 1s (up to 1 of them), the next are 2s (up to 1 one of them), the next are 4s (up to 1 of them) and so one.

Spoiler:

10-25-2006, 07:20 PM	#1
LSPoorEeyorick scribblin' Join Date: Jan 2005 Location: in the moment Posts: 3,872	I'm stuck at 18, which looks to me like binary. I don't know binary.
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10-25-2006, 07:26 PM	#2
Alex . Join Date: Feb 2005 Posts: 13,354	Binary is easy, just iterate it once. 0 = 0 1 = 1 2 = 10 3 = 11 4 = 100 5 = 101 6 = 110 7 = 111 8 = 1000 and so on. In base 10 the right most columns are 1s, with up to nine of them. The second are 10s with up to nine of them. So 89 is 8 tens, and 9 ones. Each column to the left multiplies the previous one by 10. In binary, each column to the left multiplies the previous by 2. So the rightmost column are 1s (up to 1 of them), the next are 2s (up to 1 one of them), the next are 4s (up to 1 of them) and so one. Spoiler: So 18 would be one 16, zero 8, zero 4, one 2, and zero 1. 10010
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