2007-09-25 01:07:09 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
A real number is rational if it is given by the ratio of 2 integers. For example, 3/7, 2/3, 1/8, etc.
A number is irrational if it cannot be given by the ratio of 2 integers. For example, sqrt(2), 7^(1/3), pi.
Rational numbers always have a finite or infinite but periodic decimal representation. Irrational numbers always have an infinite and non periodic decimal representation.
2007-09-25 01:24:49 · answer #1 · answered by Steiner 7 · 0⤊ 0⤋
Non-rational numbers are all those numbers that can be written as non-repeating, non-terminating decimals (pi, square root of 2, etc). All the other are rational numbers.
2007-09-25 08:14:32 · answer #2 · answered by Anonymous · 1⤊ 0⤋
EXAMPLES:
1)RATIONAL
-50,-10,-8,-3,-7/3,-1/2,0,5/6,1,2.25,19/6,78
2)IRRATIONAL
negative cube root of 11, square root of 2, pi,square root of 17
2007-09-25 09:30:48 · answer #3 · answered by Anonymous · 1⤊ 0⤋