easy · GMAT Quant
An online platform uses two independent verification steps. The probability that the first step fails is (1)/(5) and the probability that the second step fails is (1)/(4).
What is the probability that at least one of the verification steps is successful?
- (1)/(20)
- (9)/(20)
- (11)/(20)
- (3)/(5)
- (19)/(20)
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