Question 1180897
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Out of 50 students, 18 study Biology, 26 study Physics, and 2 study Biology AND Physics.
What is the probability that a student who is randomly chosen studies Biology OR Physics?
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<pre>
    P(Biology OR Physics) = P(Biology) + P(Physics) - P(Biology AND Physics) = 


                          = {{{18/50 + 26/50 - 2/50}}} = {{{(18+26-2)/50}}} = {{{42/50}}} = {{{21/25}}} = {{{84/100}}} = 0.84 = 84%.    <U>ANSWER</U>
</pre>

Solved.