A = B
the two sets A and B have exactly the same elements if A = {1, 2, 3} and B ={ 2, 1, 3}, then A = B
n(A)
the number of elements in A
when A contains an unlimited collection of elements we call it an infinite set
∈
element (member) of
∉
not an element (member) of
What is the symbol, meaning and mathematical name of this diagram?
meaning = elements in A or B or both
mathematical name = union
What would the picture of this symbol look like?
(assuming there is only set A and set B)
What is the symbol, meaning and mathematical name of this diagram?
meaning = elements in both A and B
mathematical name = intersection
What would the picture of this symbol look like?
A ∩ B
(assuming there is only set A and set B)
What is the symbol, meaning and mathematical name of this diagram?
meaning = elements not in set A
mathematical name = complement
what would the picture of this symbol look like?
(assuming there is only set A and set B)
What is the symbol, meaning and mathematical name of this diagram?
meaning = elements not in set B
mathematical name = complement
what would the picture of this symbol look like?
(assuming there is only sets A and B)
What is the symbol, meaning and mathematical name of this diagram?
meaning = elements not in A∪B
mathematical name = not in union
what would the picture of this symbol look like?
(assuming there is only set A and set B?)
What is the symbol, meaning and mathematical name of this diagram?
meaning = elements not in A or it is in B
no mathematical name
what would the picture of this symbol look like?
(assuming there is only set A and set B)
{ }
set
a collection of elements
Ø
empty set
Of the 26 cars on a garage forecourt, 12 had ABs brakes, 16 had a C-D player and 6 had neither ABs brakes or a C-D player
Find how many cars had both ABS brakes and a C-D player
What is the symbol and meaning?
everything in the overlap of B and C
What is the symbol and meaning?
Everything in D or E or both
What is the symbol and meaning?
everything not in H
What is the picture and meaning of this symbol?
(assuming there is D, E and F)
everything in D or E or both
What is the picture and meaning?
(assuming there is only H, I and J)
everything not in H
What is the picture and meaning?
(assuming there is A, B and C)
everything in the overlap of B and C
What is the symbol and meaning?
everything not in R
What is the symbol and meaning?
everything in the overlap of K, L and M
What is the symbol and meaning?
everything in S, T, U or both
What is the picture and meaning?
(assuming there is P, Q and R)
everything not in R
What is the picture and meaning?
(assuming there is K, L and M)
everything in the overlap of K, L and M
