Question

Which of the following are not rational numbers ? (Choose all that apply.)

A. /5
B. 0.666
C. 16/9
D. -30

Answer 1

9514 1404 393

Answer:

A

Explanation:

The square root of any integer that is not a perfect square will be irrational.

√5 is irrational

__

Any decimal number that terminates or repeats is a rational number, regardless of sign. All of the decimal numbers shown are rational. (All terminate after a finite number of digits.)

Of course, any ratio of integers is a rational number. That's what the word "rational" means.