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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

How many number between 0 and 100 are divisible by 0?

only 1. 0 is divisible by 0 but nothing but 0 is ever because no number multiplied by 0 can be anything other than 0. so only 0 can be divided by 0. with variables

Y= all real numbers.

R= all numbers other than 0

0xY=0 soo 0/0=0 but because the product is always zero

Rx0=0 R/0=undefined

so your answer is only 1 number.

Who invented the irrational number set?

Probably the ancient Egyptians who discovered that the diagonal of a unit square was not a rational number. And then discovered other such numbers.

Can you make a odd number with theses numbers 0 2 3 5?

No sorry you can't

Actually, you can:

0 - 2 + 3 * 5 = 5

0 - 2 = -2

-2 + 3 = 1

1 * 5 = 5

What is the connection with Hindu Arabic numerals and that which involves angles?

This question has already been answered by myself but someone else has entirely deleted the original answer probably for plagiarizing purposes so here we go again:-

It is written that at one time in the distant past the Hindu-Arabic numerals or digits of 1, 2, 3, 4, 5, 6, 7, 8, 9 and 0 were once encoded with secret geometrical symbols inasmuch that the first digit of 1 had either an arc or an angle of 36 degrees hidden in it and then thereafter each consecutive digit was increased by increments of 36 degrees by means of arcs and angles or a combination of both in which the digit 0 finally consisted of 360 degrees.

As a consequence of these concealed codes the digit degree sum of any number from 1 to infinity would always finally total to 9 degrees as the following example shows:-

Digit degree sum of 2357 = 36*(2+3+5+7) = 612 => 6+1+2 = 9 degrees

Over the past thousands of years Hindu-Arabic numerals have been transformed into the configuration that we use today but the zero figure at one time probably resembled a circle which even today consist of ten 36 degree arcs amounting to 360 degrees.

QED

What is the absolute number of negative 12?

The absolute value of negative 12 is 12.

Absolute value means how far the number is from 0

It may help to draw a number line

What is the prime numbers for 1608?

The prime factors of 1608 are 2 x 2 x 2 x 3 x 67 or 23 x 3 x 67.

Why is 216 a composite number?

216 is an even number greater than 2, which makes it a composite number.

What are the composite numbers for 8?

8 is a composite number having 1, 2, 4, and 8 as factors.