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You are not logged in. #1 20101214 05:26:57
Mod Eight trickHere's a trick for modular 8 computation. igloo myrtilles fourmis #2 20101214 05:42:42
Re: Mod Eight trickHi John;
Instead of going 6 * 8 you can use 6 * 0 and anywhere else you see an 8 substitute a 0. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20101214 05:59:27
Re: Mod Eight trickYes, yes, you are right, I was just thinking about that on the couch... igloo myrtilles fourmis #4 20101214 06:12:29
Re: Mod Eight trickWithout getting into why this works because of that to get mod 5 of any number. You just have to take the mod of the last digit. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #5 20101214 06:47:11
Re: Mod Eight trick
Not necessary, since 1000 is divisible by 8. For any number with four or more digits, you only need to concentrate on the first three digits on the right. Thus 6532 (mod 8) = 532 (mod 8) and 123456789 (mod 8) = 789 (mod 8). Last edited by JaneFairfax (20101214 06:51:20) #6 20101214 07:25:29
Re: Mod Eight trickHi John; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #7 20101215 01:36:15
Re: Mod Eight trickWow, thanks Jane, that's incredible. 100a + 10b  4a  2b is then divisible by 8, hence cancels!!! igloo myrtilles fourmis #8 20101215 03:07:07
Re: Mod Eight trickHi John; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 