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Sagot :
Answer:
(i) [tex]\frac{27}{35}[/tex]
(ii) [tex]\frac{8}{35}[/tex]
Step-by-step explanation:
Probability refers to chances of occurrence of any event.
Probability is calculated by dividing number of favorable outcomes by total number of possible outcomes.
Total number possible of outcomes = 350
(i)
Number of favorable outcomes = [tex]65+95+110=270[/tex]
Probability [tex]=\frac{270}{350}=\frac{27}{35}[/tex]
(ii)
Exactly 3 heads is equivalent to no tails.
Number of favorable outcomes = [tex]80[/tex]
Probability [tex]=\frac{80}{350}=\frac{8}{35}[/tex]
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