probability Flashcards
(6 cards)
1
Q
what is probability?
A
probability is a way of describing the chance of an event happening.
2
Q
formula of probability?
A
number of favourable outcomes / total number of possible outcomes
3
Q
the probabilities of all possible outcomes of an event add up to _
A
1
4
Q
true or false;
P (event not happening) = 1-P(event happening).
A
true
5
Q
true or false;
all probabilities must have a value greater than or equal to 0 and less than or equal to 1.
A
true
6
Q
cards?
A
total = 52, each colour = 26 each, each design = 13 each, 9 number cards per design (9×4=36), 3 face cards per design (3×4=12) and 4 picture cards per design (4×4=16)
