# Manuals/calci/SIGMA

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**SIGMA()**

## Description

- This function shows the sum of the numbers.
- In shows the sum of the first ten numbers.
- Sigma is the eighteenth letter of the ancient Greek alphabet.
- As an upper case letter (Sigma), it is used as a symbol for sums and series.
- It is showing the sum of the first ten numbers,which is 1+2+3+...+10=55.

## Examples

- SIGMA() = 55