SOLUTION: I STILL DIDN'T undersatand what is the differnce between rational and irrational numbers. and what is really the real numbers

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Question 91721: I STILL DIDN'T undersatand what is the differnce between rational and irrational numbers. and what is really the real numbers
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
rational numbers are those that can be written as the RATIO of two whole numbers, while irrational numbers can't be

examples are helpful ... 3, 11/4, -3/7, 2i are all rational

numbers like sqrt%287%29 and pi are irrational - not equal to ANY fraction ... this is true of ALL non-perfect square roots

real numbers are those that DON'T contain an imaginary component - no sqrt%28-1%29 or i

a number can be rational or irrational AND real or imaginary