Difference between revisions of "Types of Number"

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(Rational Numbers)
(Ordinal Numbers)
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==Ordinal Numbers==
 
==Ordinal Numbers==
A number used to identify the relative position of one number to another. Unlike the other types of numbers it does not have a representative symbol.
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A number used to identify the relative position of one number to another. Unlike the other types of numbers it does not have a representative symbol. An example of this would be 1st, 2nd, 3rd.
  
 
==Cardinal Numbers==
 
==Cardinal Numbers==

Revision as of 10:37, 20 September 2017

Natural Numbers

A positive whole number including zero. Represented as N = (0,1,2,3,4 ....)

Integer Numbers

Any positive or negative whole number including zero. Represented as Z = (...,-2,-1,0,1,2,...)

Rational Numbers

A number that can be expressed as a fraction or ratio. An example of this is 8 or even 1/8. Represented as Q

Irrational Numbers

A number that cannot be represented as a fraction or ratio, the decimal form will contain infinite repeating values. An example of this is √7 because it cannot be simplified.

Real Numbers

Any positive or negative number with or without a fractional part.

Ordinal Numbers

A number used to identify the relative position of one number to another. Unlike the other types of numbers it does not have a representative symbol. An example of this would be 1st, 2nd, 3rd.

Cardinal Numbers

A number used to identify the size of something.

Real Algebraic

The real subset of the algebraic numbers: the real roots of polynomials. Real algebraic numbers may be rational or irrational. √2 = 1.41421... is irrational. Irrational decimal expansions neither end nor repeat. Represented as AR

Revision

1. -1 is not included in which of the following

Natural Number
Natural numbers are only positive integers
Rational Number
All integers can be respresented as a ratio
Real Number
All integers are also real numbers
Integer
Integers are positive or negative

2. 12 is not included in which of the following

Natural Number
Natural numbers are only positive integers
Irrational Number
All integers can be respresented as a ratio
Real Number
All integers are also real numbers
Integer
Integers are positive or negative

3.

The denary number 31 can be represented in unsigned 8 bit binary as:
→ 31 divided by 2 = 15 r 1
→ 15 divided by 2 = 7 r 1
→ 7 divided by 2 = 3 r 1
→ 3 divided by 2 = 1 r 1
→ 1 divided by 2 = 0 r 1
→ Now read the remainders from the bottom up to get 11111
→ add the extra bits needed to make it upto 8 bits

4. What is this number an example of '29th'

Natural Number
Natural numbers are only positive integers
Ordinal number
A number used to identify the relative position of one number to another.
Real Number
All integers are also real numbers
Integer
Integers are positive or negative

5. What is the symbol 'Z' representative of

Natural Number
Natural numbers are only positive integers
Ordinal number
A number used to identify the relative position of one number to another.
Real Number
All integers are also real numbers
Integer
Integers are positive or negative

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