Question

Identify all values that are irrational.
-1/3
-3
13
Pi/3​

Answer 1

pi/3 irrational

Explanation:

A rational number is the ratio of two integers

-1/3 is two integers rational

-3 can be written as -3/1 rational

13 can be written as 13/1 rational

pi/3 pi itself is irrational and cannot be written as an integer