The first command is simple addition, so the exercise is to add some numbers together. Open up R, and use it to do a few basic sums. In particular, it’s worth trying the following:

- Try adding more than two numbers.
- Try playing around with the number of spaces between numbers and the plus sign, and verify that it doesn’t actually matter.
- Try hitting enter when you’re half way through the command (e.g.,
`10+`

). R will wait for you to finish before trying to execute it.

- Multiply 3 by 14 and subtract 5 from the result
- Raise 5 to the power of 4
- Divide 267563 by 1235

- Use logical operations to get R to agree that “two plus two equals five” is
`FALSE`

- Use logical operations to test whether 8 raised to the power 13 is less than 15 ^ 9

- use the
`sqrt()`

function to calculate the square root of 789 - round 2.456 to the nearest whole number using
`round()`

- round 2.456 to two decimal places using
`round()`

- R has a
`factorial()`

function that calculates the factorial function,`n!`

(e.g.,`5! = 5*4*3*2*1`

). Use it to calculate`25!`

, and take note of the way that R formats the answer. - Use
`factorial()`

to (try to) calculate`2000!`

, and note the answer that R gives.