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Number Sets

Different Sets of Numbers

1,2,3,4,5... Natural or Counting Numbers
0,1,2,3,4,... Whole Numbers
...-2,-1,0,1,2,... Integers
examples: 2, 4/5, 2/7, 1.5, 2.34, 0.3333... Rational Numbers
examples: pi, square root of 2, 6.54837903... Irrational Numbers
Any number on the number line Real Numbers
examples: 2+3i, i, 5-7i, -5i Imaginary Numbers
examples: 2+3i, 8, 9-2i, 145, 20+i Complex Numbers
1,4,9,16,25,36,49 Perfect Squares
1,8,27,64,125 Perfect Cubes
1,2,6,24,120,720 Factorial Numbers
1,2,4,8,16,32,64,128 Powers of 2
1,3,9,27,81 Powers of 3
1,1,2,3,5,8,13,21,34 Fibonacci Numbers
Created by: bretschj