Question

Which of the following numbers is an irrational number?

A. √11
B. 3
C. 19
D. -3

Answer 1

The answer is A. √11.

Step-by-step explanation:

An irrational number is a number that cannot be expressed as a fraction of two integers. The square root of 11, denoted as √11, is an irrational number because it cannot be written as a fraction.

It is approximately equal to 3.31662479. Therefore, the answer is A. √11.