Question

Which number is irrational?

Answer 1

Answer: $\sqrt{11}$

Step-by-step explanation:

1. To solve this problem you need to remember the definition of an irrational number.

2. An irrational number is defined as a number that cannot be written as a fraction.

3. Based on this information, you have:

$-4=\frac{-4}{1}$ (It is not irrational)

$\frac{2}{9}$ (It is not irrational)

$\sqrt{11}$ (Irrational)

$8.26=\frac{413}{50}$  (It is not irrational)