document.write( "Question 513391: I need to know a number that is an real, rational, integer, whole and natural number \n" ); document.write( "

Algebra.Com's Answer #342993 by oberobic(2304) $\"\"$ $\"About$

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Rational numbers can be shown as a fraction: a/b
\n" ); document.write( "Note that b cannot = 0 because dividing by 0 is undefined.
\n" ); document.write( "However, b can =1, so all whole numbers are rational.
\n" ); document.write( "For example, 13 is a rational number: 13 = 13/1 = 26/2 = 39/3 etc.
\n" ); document.write( "All integers are rational.
\n" ); document.write( "All integers are whole numbers.
\n" ); document.write( "But not all rational numbers are whole numbers.
\n" ); document.write( "4/3 is a rational number.
\n" ); document.write( "So is 355/113, which is a very interesting number if you try it. (Hint: It is a rational approximation of a fundamental irrational number.)
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\n" ); document.write( "Irrational numbers cannot be shown as a fraction.
\n" ); document.write( "The classic examples of irrational numbers are pi, e, and the sqrt(2).
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\n" ); document.write( "Real numbers include both rational and irrational numbers.
\n" ); document.write( "Real numbers can be shown from -infinity to +infinity, including 0.
\n" ); document.write( "Real numbers are continuous.
\n" ); document.write( "This means there are infinitely many real numbers between any other two real numbers.
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\n" ); document.write( "Finally, natural numbers are the ordinary counting numbers: 1,2,3...
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\n" ); document.write( "Done. \n" ); document.write( "

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