A teacher observes that if Lisa and Ian work independently
on the same problem, Lisa has a 90%...
Mathematics, 22.05.2020 05:07, abbyhammondd
A teacher observes that if Lisa and Ian work independently
on the same problem, Lisa has a 90% chance of solving the
problem and lan has a 70% chance of solving it. What is
the probability that at least one of them solves the problem?
A 0.97
B 0.63
C 0.2
D 1
Answers: 1
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