a set
order pair
An ordered set of numbers is a set of numbers in which the order does matter. In ordinary sets {A, B} is the same as {B, A}. However, the ordered set (a, b) is not the same as the ordered set (B, a).
The rational numbers, the real numbers and sets of higher order which contain the reals such as the complex numbers.
To find the median of a set of numbers, you first need to arrange the numbers in either ascending or descending order. Once the numbers are arranged, the median is the middle number in the set. In this case, when the numbers are arranged in ascending order, the set becomes 43, 44, 45, 47, 48, 49, 49, 52, 53. Since there are 9 numbers in total, the middle number is the 5th number, which is 48. Therefore, the median of the given set of numbers is 48.
A formula is typically a set equation to follow in order to get a specific answer or outcome. A formula could also be a procedure to follow in order to get a certain outcome.
sequence
series
In a certain sense, the set of complex numbers is "larger" than the set of real numbers, since the set of real numbers is a proper subset of it.
Many infinite sets appear in mathematics: the set of counting numbers; the set of integers; the set of rational numbers; the set of irrational numbers; the set of real numbers; the set of complex numbers. Also, certain subsets of these, such as the set of square numbers, the set of prime numbers, and others.
If you have ONLY additions, you can add numbers in any order. Similarly, if you have ONLY multiplications, you can multiply in any order. Both rules follow from the commutative and associative properties of addition, and of multiplication, respectively.
a set
order pair
order pair
This is called a sequence and if we add the numbers in that sequence it is called a series.
The probability of a certain set of numbers coming up in the lottery is equal to the probability of any other set of numbers coming up. Just because a certain set of numbers came up, that does not mean that the same set of numbers is more or less likely to come up again.
Prime numbers have only 2 factors and their set is not well defined because they do not follow an orderly mathematical pattern.