Question

Which of the following is a true statement?

All square roots are irrational.

All decimals are irrational.

All non-perfect squares have irrational square roots.

All irrational numbers can be written as ratios of two integers.

Answer 1

all non perfects squares have irrational roots

Answer 2

1) sqrt (4) = 2 (which is rational)
2) 0.3 = 3/10 (which is rational)
4) the ratio of two integers is rational by definition...


that leaves #3 as the only possible true answer.