We will first see the basic arithmetic operations in R. The following operators stand for:

Operator | Description |
---|

+ | Addition |

- | Subtraction |

* | Multiplication |

/ | Division |

^ or ** | Exponentiation |

**Example 1:**

# An addition
3 + 4

Output:

## [1] 7

You can easily copy and paste the above R code into Rstudio Console. The **output** is displayed after the character #. For instance, we write the code print('Guru99') the output will be ##[1] Guru99.

The ## means we print an output and the number in the square bracket ([1]) is the number of the display

The sentences starting with # **annotation**. We can use # inside an R script to add any comment we want. R won't read it during the running time.