Answer:
0.7
Step-by-step explanation:
A' is everything what is not A
So:
A' = {9, 10, 11, 12, 13, 15, 16}
Number of ways it can happen: |A'| = 7
Total number of outcomes: |Ω| = 10
Probability of an event happening:
[tex]\bold{P(A')=\dfrac{|A'|}{|\Omega|}=\dfrac7{10}=0.7}[/tex]
