Mathematics, 05.06.2021 04:00 queentynaisa

In a doctors waiting room 12 people are waiting to be seen; 7 claiming to have just a cold, 3 claiming to have a fever and a cold, and 2 claiming to have just a fever. What is the probability a person waiting to be seen claims to have a cold or a fever? 1. 0.17
2.0.25
3.0.37
4.0.50

Please explain how you got this answer ! Thank you !!

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