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Counting Numbers
Sum of the Counting Numbers
Term | Definition |
---|---|
Sum | The result of adding a set of numbers or algebraic expressions. |
Natural Counting Numbers | The numbers used for counting. That is, the numbers 1, 2, 3, 4, etc. |
Median of a Set of Numbers | The Median of a set of numbers is a value for which half the numbers are larger and half are smaller. If there are two middle numbers, the median is the arithmetic mean of the two middle numbers. |
Sum of the Counting Numbers Formula | Sum= [n(n+1)]/2 |
Even number | An integer that is a multiple of 2. The even numbers are { . . . , –4, –2, 0, 2, 4, 6, . . . }. |
Odd number | An integer that is not a multiple of 2. The odd numbers are { . . . , –3, –1, 1, 3, 5, . . . }. |