Which of these numbers are both real and irrrational
5.8585858
63.4
/21
/36
2 answers
since 21 is not a perfect square, √21 is irrational
The first two are real and rational
(Google repeating decimal rational, assuming you mean 5.8585858........ )
The second two are typos I assume.
(Google repeating decimal rational, assuming you mean 5.8585858........ )
The second two are typos I assume.