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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

Does the set of rational numbers include the set of integers?

Yes, since any integer can be written as a fraction. For example, 5 is the same as 5/1.

What does 674129811 rounds to?

674 129 811 rounds to

  • 700 000 000 to the nearest hundred million
  • 670 000 000 to the nearest ten million
  • 674 000 000 to the nearest million
  • 674 100 000 to the nearest hundred thousand
  • 674 130 000 to the nearest ten thousand and thousand
  • 674 129 800 to the nearest hundred
  • 674 129 810 to the nearest ten

Does negative 2 correspond with 5?

Negative 2 does not correspond to 5 in any way. Negative 5 might be seen as a mirror image of 5 on the number line, but negative 2 has no correlation to 5.

What are the only species that use language to express and comprehend an infinite number of novel utterances?

Pimarily Homo Sapiens (humans) HOWEVER- there are documented instances of the use of language by gorillas- including the use of sign language.

Is there a simple test for determining whether an elliptic curve has an infinite number of rational solutions?

Equations of the form y2 = x3 + ax + b are powerful mathematical tools. The Birch and Swinnerton-Dyer conjecture tells how to determine how many solutions they have in the realm of rational numbers-information that could solve a host of problems, if the conjecture is true.

Positive numbers in math?

Positive numbers refers to any real number that is greater than zero.

Why pi is a rational or an irrational number?

Pi is an irrational number because it cannot be expressed as a ratio of two integers.