And vs. or Flashcards
If set A is {1, 3, 5, 7} and set B is {2, 3, 5, 8, 9}, which numbers are in A and B?
3, 5 are in A and B
If set A is {1, 3, 5, 7} and set B is {2, 3, 5, 8, 9}, which numbers are in A or B?
{1, 2, 3, 5, 7, 8, 9} are in A or B
If set A is {1, 3, 5, 7} and set B is {2, 3, 5, 8, 9}, which numbers are in A U B?
{1, 2, 3, 5, 7, 8, 9} are in A U B
If set A is {1, 3, 5, 7} and set B is {2, 3, 5, 8, 9}, which numbers are in A ∩ B?
{3, 5} are in A ∩ B
A ∩ B represents:
a. the union of A and B
b. the intersection of A and B
b. the intersection of A and B
A U B represents:
a. the union of A and B
b. the intersection of A and B
a. the union of A and B
A ∩ B represents:
a. all of the numbers in set A and B
b. where set A and set B overlap
b. where set A and set B overlap
A U B represents:
a. all of the numbers in set A and B
b. where set A and set B overlap
a. all of the numbers in set A and B
A U B represents
a. A or B
b. A and B
a. A or B (visualize the U getting a hat to become a O, O for “or”)
A ∩ B represents
a. A or B
b. A and B
b. A and B (visualize the ∩ getting a belt across the middle to become a A, A for “and”)
The probability of A U B is equal to
a. the probability of A + probability of B
b. probability of A x probability of B
a. the probability of A + probability of B
A U B means A or B, “or” means “add”
The probability of A ∩ B is equal to
a. the probability of A + probability of B
b. probability of A x probability of B
b. probability of A x probability of B
A ∩ B means A and B, “and” means “times”
The union of A and B means:
a. A or B
b. A and B
a. A or B
The intersection of A and B means:
a. A or B
b. A and B
b. A and B
If set A is {1, 3, 5, 7} and set B is {2, 3, 5, 8, 9}, which numbers are in the union of A and B?
{1, 2, 3, 5, 7, 8, 9}
If set A is {1, 3, 5, 7} and set B is {2, 3, 5, 8, 9}, which numbers are in the intersection of A and B?
{3, 5}
If the probability of A is 0.2 and the probability of B is 0.3, what is the probability of A U B?
A U B = probability of A + probability of B = 0.2 + 0.3 = 0.5
If the probability of A is 0.2 and the probability of B is 0.3, what is the probability of A ∩ B?
A ∩ B = probability of A x probability of B = 0.2x0.3 = 0.06
If the probability of A is 0.2 and the probability of B is 0.3, what is the probability of A or B?
A or B = probability of A + probability of B = 0.2 + 0.3 = 0.5
If the probability of A is 0.2 and the probability of B is 0.3, what is the probability of A and B?
A and B = probability of A x probability of B = 0.2x0.3 = 0.06
If the probability of A is 0.2 and the probability of B is 0.3, what is the probability of the union of A and B?
union of A and B = probability of A + probability of B = 0.2 + 0.3 = 0.5
If the probability of A is 0.2 and the probability of B is 0.3, what is the probability of the intersection of A and B?
intersection of A and B = probability of A x probability of B = 0.2x0.3 = 0.06
