why is 1.6666666667 an irrational number?

this was my answer to a question, and you also have to explain why your answer is an irrational number.

an irrational number is "any real number that can not be written and the quotient of two number"

but it can? so is it a rational number then?

3 answers

1.6666666667 is NOT an irrational number.

(1.6666666667 = 16666666667/10000000000 , there! I wrote it as a rational number)
WHAT DOES 16666666667 MEAN! YOU DIDN'T ELLS US WHAT IT MEANS!!!!! :p
bot?
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