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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
What is the importantace of real number?
Real numbers are all numbers that do not have a complex component (i = sqrt(-1)). They are used for everything in the real world from totalling up a grocery bill to calculating the area of a circle.
When does a prime number have 3 or more factors?
Never because only composite numbers have more than two factors
How do you subtract two integers with the same sign?
It is normal subtraction. if the tw numbers are x and y then the subtraction is x-y
Why does the numbers repeat themselves wtih each decimal hundreds and thousands?
Because decimal numbers that can't be expressed as fractions are irrational numbers whereas all rational numbers can be expressed as decimals or fractions.
How can you tell which fraction is greater if both fractions have the same number?
If the fraction is 4/4 and 4/4 they are the same.
if the fraction is 2/4 and 3/4. 3/4 Is larger.
Is negative17 rational or irrational?
Integers are rational numbers, whether they are positive or negative.
How do you write real numbers into decimal friction?
If the number is a rational number than you divide the numerator by the denominator and keep going until the fraction terminates or goes into a repeating cycle. If it is an irrational number, then its decimal expression is obtained a s the limit of rationals that get closer and closer to the number. There are several numerical methods to help you do that.
Incidentally, I do not wish to rub it is, but the word you want is fraction, not friction!
Why are prime numbers more useful than composite numbers in cryptography?
This question is based on a misunderstanding. Most cryptography is based on numbers that are products of two very large prime numbers. Being the product of two primes means that these numbers are composite - not prime!
Can we include irrational numbers in the set of positive numbers?
Yes, any positive number is a number that doesn't have a (-) behind it (-20; -23.67; -45.45454...), and is not zero (0).
Any repeating number (see 3rd negative example) is irrational, no matter what its sign. Irrational numbers also include numbers (decimals, specifically) that don't repeat, but don't stop. Numbers that don't terminate include pi.
Pi, as it is, is proof of a positive irrational number.
Is - square root 17 irrational rational irrational whole irrational rational?
17 is a prime number with no factors other than itself and 1 therefore minus square root of 17 is an irrational number.
Avogadros number is the number what?
It is the number of fundamental particles - atoms or molecules - of a substance in 1 mole of that substance.
How many are the prime numbers in1 to 100?
There are 25 prime numbers from 1 to 100.
These are:
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
