Let's first begin with numbers:[br][br]NATURAL: 1,2,3,4,.....[br][br]WHOLE: 0,1,2,3,4,.....[br][br]INTEGERS: ....-3,-2,-1,0,1,2,....[br][br]RATIONAL: Fractions[br][br]IRRATIONAL: Not able to be expressed as a simple fraction: for example [math]\sqrt{2}[/math][br] *believe me you don't want to know why.[br][br]REAL: Every integer, rational, and irrational number[br][br]IMAGINARY: 8i, the i means imaginary[br]_______________________________________________________[br]