Question

Identify the number which is IRRATIONAL.
Responses
A -1.23-1. 23
B square root of 8
C 2/3
D 0

Answer 1

To identify which number is irrational, let's analyze each of the options:

A. \(-1.23\) - This is a decimal number and is rational because it can be expressed as a fraction (-123/100).

B. \(\sqrt{8}\) - The square root of 8 can be simplified to \(2\sqrt{2}\). Since \(\sqrt{2}\) is an irrational number, \(\sqrt{8}\) is also irrational.

C. \(2/3\) - This is a fraction and is rational.

D. \(0\) - This is a whole number and is rational.

Based on this analysis, the number that is irrational is:

**B. \(\sqrt{8}\)**.