The probability of passing and failing are complementary events, which means that if the probability of passing is 0.8, then the probability of failing is:
Probability of failing = 1 - Probability of passing
Probability of failing = 1 - 0.8
Probability of failing = 0.2
Therefore, the probability of failing the examination is 0.2 or 20%.
If the probability of passing an examination is 0.8 what is the probability of failing the same examination
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