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Number Sets
Different Sets of Numbers
Question | Answer |
---|---|
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 |