What is an irrational number?

An irrational number can't be represented as a/b (if a and b are integers). The square-root of 2 is the most popular example of an irrational number and it conforms to this condition. Apparently Hippasus of Metapontum discovered the irrational numbers identifying the sides of the pentagram. This way the ancient Greeks are considered to be the first ones to know the irrational numbers.

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More Info: en.wikipedia.org

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What are your thoughts on this subject?

130 Comments

Robert Wayman

Better dust off that B.S., Bill. 1/3 isn't irrational. Irrational numbers don't end *and* don't repeat.

Jim Laughner

The easiest way to solve π is to eat it, regardless of whether it's square or round.

Greg Edwards

so easy-if you have a B.S. Math

Bill Gendron

I do! Irrational numbers have no end. 1/4 = 0.250; 1/3 = 0.333333333333333333333333333333.....never ends.

Vincent

Pi or e are irrational numbers.

sjenkins

I can't believe I remembered this from Beginning Algebra in 8th grade!That seems a thousand years ago and Math was never even my best subject!

ktldg

deborahbrhoades, failed a course over a small part of it. Irrational numbers are not used so much I'm chemistry. Glad I knew the answer! Sorry u failed 😕

ktldg

Jaminator, that's one of way putting it. In such a great nice way ... haha well done

ktldg

Charles Albert, it's not an equation Its a variable

I JUST GUESSED . !!!!

Marianne Frederick Halterman

How about "a number that cannot think for itself and makes poor decisions!"? Lol!

Fresnel Fanfan

Algebra and Trigonometry were my strong points along with Arithmetics. I have forgotten most of that.

Clara

I got it wrong but I learnt something. .

deborahbrhoades

I an not strong in math.I failed Chemistry 1300 because of this fact. I, however, did know this answer.

earlepg

Robert Wayman, Barely remember enough to get it. What was discussed right here is clearer than the explanation given.

Annie

Never made sense to me!!!😳

Char

Kitty White, as much as you do..this is our quizzes not just specific peoples Quizzes. I'm smart enough if your not picking on others to either read or ignore peoples responses. Its OUR quizzes..