Question

Select the BEST classification for π. A) irrational B) rational C) imaginary D) not real

Answer 1

Well it's not really a matter of which is "best", one is right and the others are wrong :)

$\pi$ is an irrational number, meaning that it can't be expressed with a fraction between integers: in other words, there doesn't exist two integers $a,b$ such that

$\dfrac{a}{b}=\pi$

This is why option B is wrong. Also, imaginary numbers (option C) are complex numbers with no real part. Since

$\pi = \pi + 0i$

$\pi$ is not imaginary. Finally, irrational numbers are real numbers, so option D is wrong as well.

Answer 2

Answer:

a

Step-by-step explanation: