Which of these numbers are irrational?
see in picture for answer choices

Option A:

are irrational numbers.

Solution:

Given numbers:

To which of these are irrational numbers:

Irrational:

An irrational number cannot be written in the form , where a and b are integers and b is non-zero.

(1) cannot be written as .

So, it is a irrational.

(2)

Cube and cube roots are get canceled.

2 is an integer. So it is not a irrational number.

(3) is in the form .

So it is not a irrational number.

(4)

Square and square root are get canceled.

9 is an integer. So it is not a irrational number.

(5)

14 cannot be written as form.

So, it is a irrational number.

Therefore are irrational numbers.

Option A is the correct answer.