Imaginary number Imaginary number (when squared give a negative result) i is the unit of imaginary number which is square root of -1 i = √-1, because i2=-1 So, (7i)2 = -7 Definition of Complex Number A Complex Number is a combination of a Real Number and an Imaginary Number Either Part Can Be Zero … Continue reading "Complex Numbers"

Definitions Factors are numbers we multiply together to get another number. When we find the factors of two or more numbers, and then find some factors are the same (common), they are the common factors. Factors of two (or more) numbers have in common are called the common factors of those numbers. Example Learn More Greatest Common … Continue reading "Common Factor"

The factorial function (using symbol: !) says to multiply all whole numbers from our chosen number down to 1. So n! (read “n factorial”) means n × (n-1) × (n-2) × … × 3 × 2 × 1 Calculating Factorial From the Previous Value We can easily calculate a factorial from the previous one: n n! n … Continue reading "Factorial !"

Table of Factors Table of Factors for 1 to 100 (not including negatives) Number Factors 1 1 2 1, 2 3 1, 3 4 1, 2, 4 5 1, 5 6 1, 2, 3, 6 7 1, 7 8 1, 2, 4, 8 9 1, 3, 9 10 1, 2, 5, 10 11 1, 11 … Continue reading "Table of Factors and Multiples"

Prime Numbers A Prime Number is a whole number greater than 1 that can not be made by multiplying other whole numbers. The number that we can make by multiplying other whole numbers is a Composite Number. Factors Factors are the numbers you multiply together to get another number 4 × 2 = 8 From … Continue reading "Prime Factorization"

The reciprocal of a number is one divided by that number Reciprocal of a Fraction To get the reciprocal of a fraction, simply switch the top and bottom of the fraction (numerator and denominator). Reciprocal of a Reciprocal The reciprocal of a reciprocal takes you back to where we started: Remember that “Reciprocal” comes from the Latin reciprocus … Continue reading "Reciprocal of Number"

Composite number is a whole number that can be made by multiplying other whole numbers. Example: 10 can be made by 5 × 2 so is a composite number. Not Composite number 5 = 1 × 5, Is not composite number because 1 × 5 isn’t using other whole numbers 7 = 2 × 3.5, Is … Continue reading "Composite Number"

Numbers Can be Positive or Negative – Negative sign + Positive sign No Sign Means Positive If a number has no sign it usually means that it is a positive number. Adding a Positive Number Adding positive numbers is just simple addition. Subtracting A Positive Number Subtracting positive numbers is just simple subtraction. Adding A … Continue reading "Positive and Negative Numbers"

Irrational means not Rational An Irrational Number is a real number that cannot be written as a simple fraction.   Example Rational Number 0.5 = ½ Irrational Number √2 = 1.414213562373095… = ?/? Rational Numbers A Rational Number can be written as a Ratio of 2 integers (ie a simple fraction). Irrational Numbers The numbers that … Continue reading "Irrational Numbers"

About Fibonacci (The Man) His real name was Leonardo Pisano Bogollo. He lived in Italy between 1170 and 1250. “Fibonacci” was his nickname, which roughly means “Son of Bonacci”. Fibonacci was not the first to know about the sequence, it was known in India hundreds of years before! As well as being famous for the Fibonacci … Continue reading "Fibonacci Sequence"