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QUESTION
he has two microphones which he uses to teach in RH100; ONE IS Sony and one is Telefunken. The Sony fails with probability 0.3, while the telefunken...
he has two microphones which he uses to teach in RH100; ONE IS Sony and one is Telefunken. The Sony fails with probability 0.3, while the telefunken fails with probability 0.4, on monday morning, he picks a microphone at random.
what is the probability that it will fail
