Question

Which number is irrational?
6
-1
square root of 6
4

Answer 1

`√(6)` is irrational

Explanation:

A rational number can be expressed as a fraction of 2 whole numbers. An irrational number cant.

6 =
`(6)/(1)` --- rational

-1 =
`(-1)/(1)` --- rational

`√(6)` = 2.449489... --- cant be expressed as a fraction, irrational

4 =
`(4)/(1)` --- rational