Question

Which of the following numbers is irrational?

-7/4, 2/3, square root of 3, square root of 4

Answer 1

The square root of 3

Explanation:

An irrational number can not be written as a ratio.

And because the square root of 3 is the only answer that can not be written as a ratio, it is irrational.

Therefore, The square root of 3 is Irrational.

Answer 2

Irrational means that it cannot be expressed as a whole number, fraction, or decimal.

-7/4 is a fraction
2/3 is a fraction
square root of 4 is plus or minus 2, whole numbers

But, square root of three can't possibly be expressed as a solid number.

Hope this helps!