SOLUTION: Susan has an assignment in Math and its probability is 5/14. On the other hand, her Science assignment's probability is 3/7. If the probability of assignments both in Math and

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Question 1180898: Susan has an assignment in Math and its probability is 5/14. On the other hand, her Science assignment's probability is 3/7.
If the probability of assignments both in Math and Science is 1/7, what is the probability that she has EITHER an assignment in Math OR an assignment in Science?
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
P(a OR b)=P(a)+P(b)-P(a AND b)
=(5/14)+(6/14)-(2/14)
=9/14

Answer by ikleyn(52797) About Me  (Show Source):
You can put this solution on YOUR website!
.

As this "problem" was worded,  it  WAS  TERRIBLE  to read it . . .