Probability of picking blue marble =
Step-by-step explanation:
Given,
Number of blue marbles = 4
Number of red marble = 1
Total number of marbles = 5
To find the probability of picking blue marble
Formula
Probability of an event = (number of occurrence of an event) ÷ (total number of events)
So,
Answer:
4/5 or 80%
4 out of 5 marbles are blue and 4/5 = .8
do you need it to be simplified?
The answer is number 3 :)
In terms of probablity (A - appetizer oredered, B - desert ordered)
P(A)=63%
P(B)=40%
P(AorB)=76%.
Using the formula:
P(AorB)=P(A)+P(B)-P(A&B) we get P(A&B)=63%+40%-76%=27% (probability we were looking for).
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