2007-04-02 13:51:55 · 7 answers · asked by pARTy MAJOR 4 in Science & Mathematics ➔ Mathematics
Most numbers in mathematics have never been used, In particular, I don't think the number [k=1, 65536]∑7￪￪k has ever been used in the entire history of mathematics, and never will be used again. If you're looking for those numbers that have been used at least once, then look for obscure results regarding least upper bounds, such as Skewes' number (I wouldn't cite Graham's number, because although it is much larger, it has been used extensively for illustrating the concept of an extremely large number, which I consider an important use).
2007-04-02 14:13:36 · answer #1 · answered by Pascal 7 · 1⤊ 0⤋
Imaginary number are used ALL the time! They're a critical part of differential equations, and there are entire texts and courses dedicated to them. I'd say that the least used TYPES of numbers are... well, every time I think of a type, I think of 3 or 4 uses for it, so I can't really say.
If you're looking for a specific number, I'd say one that is a few away from a weird one. Like "googol". Everyone knows it's a 1 with a hundred zeros after, and people mention it often, But who ever talks about googol +1? or minus 3? I'd say those are hardly used.
2007-04-02 21:04:32 · answer #2 · answered by Kelsey 4 · 0⤊ 0⤋
While it is true that all familiar types of numbers such as integers, rationals, reals, imaginary are used widely among different parts of society, even obscure numbers such as Skewes' number (481 Yahoo hits) and Graham's number (2630 Yahoo hits) are important to some people. But, of course, any sufficiently large random number is likely to be "discovered" when it is typed. So I herewith contribute the discovery of a new such number and claim the right to name it.
Now and forever: bjgenckinn's number = 1,953,529,184,127,722,475,694
(Unless bjgenckinn already has a number -- in which case, never mind.)
2007-04-02 23:54:56 · answer #3 · answered by David C 1 · 0⤊ 0⤋
non-prime numbers over 51
2007-04-02 20:59:12 · answer #4 · answered by nuff 3 · 0⤊ 0⤋
It all depends on what math courses you are taking or going to take. For example, to shop at the local mall, you don't need to know derivatives. However, if you are taking calculus, you need to know derivatives and everything else learned BEFORE calculus.
Guido
2007-04-02 20:57:47 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Imaginary numbers, like the square roots of negatives. You generally don't run into those on your water bills or measuring for wallpaper!
2007-04-02 20:54:37 · answer #6 · answered by Wanderer 4 · 0⤊ 2⤋
it depenes on the base you are in if you are in base 3 than the leased used is 3456789 but in base 10 there is no leased used #
2007-04-02 21:01:38 · answer #7 · answered by lexis the answer doc. 2 · 0⤊ 0⤋