1 Answers

Best Answer

If P(E) is the probability of the event E, then
Odds for E= (P(E))/(1-P(E))= (P(E))/(P(E'))
(4)/(1)
Odds for E= (P(E))/(1-P(E))
-> (4)/(1)= (P(E))/(1-P(E))
Multiplying both sides by (1-P(E))
-> 4* (1-P(E))=P(E)
-> 4-4P(E)=P(E)
Adding 4P(E) on both sides
-> 4-4P(E)+4P(E)=P(E)+4P(E)
-> 4=5P(E)
Dividing both sides by 5
-> P(E)= (4)/(5)