Question: is 1/2 an irrational number?
Answer: Irrational, then, just means all the numbers that aren't rational. ... However, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers. So the set of all rational numbers will contain the numbers 4/5, -8, 1.75 (which is 7/4), -97/3, and so on.