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Numbers
Numbers are our way to quantify, label, and organize the world around us in a logical manner. However, the systems used to obtain this goal differ geographically, historically, and by relative utility. All questions pertaining to numbers, including historic labeling systems, bases of numerical systems, constants, and the various ways they're grouped together, should be placed into this category.
46,867 Questions
Why do the natural numbers need an extension?
While natural numbers are closed with respect to addition and mulitplication, they are missing the additive identity (zero). Furthermore, they are not closed with respect to two of the fundamental operations of arithmetic: subtraction and division.
Is the number 99 compostie or prime explain?
99 is a composite number because it has more than two factors
There are LOTS of them.
Here's just one
423452169
Can a number be a member of the set of rational numbers in the set of irrational numbers?
No, a number is either rational or irrational
Why are positive and negative signs needed?
Because they are basis to Algebra. And Algebra is one of the fundamentals of Mathematic.
There is no such number as Gopichand's number which is universally recognized.
Why are numbers you get in trigonometry never whole numbers but have to be rounded?
Not true.
tan(45) = 1 is a whole number.
sin(0) = 0 and sin(90) = 1 are whole numbers.
So the question is based on nonsense!
How can you raise a number to a decimal for example 4 raised to 3.5?
That's a very interesting subject, and an important one in Math, Engineering, and
almost every branch of Science.
A short answer is: Do it on a calculator, and you never even have to understand it.
Of course, if you do that, then you never know whether the calculator is lying to you.
It's not possible to teach the whole subject here. But the example in your question
happens to be one that involves comparatively easy numbers, so I'll go through the
process using your example:
-- You know that when two powers of the same base are multiplied, you just keep the base
and add the powers. So you'll recognize that 43.5 could come from (43) times (40.5) .
-- (43) = 64
-- (40.5) or (41/2) means the square root of 4 . That's 2 .
-- So (43) times (40.5) = (64) x (2) = 128 .
