Probability
Operations on Events
Grade 12
Question:
<p>Venn diagram problem with 900 people. Fever, Cough, Breathing. Answer key is 0.80.</p>
Step-by-Step Solution
Key Concept: At most 1 = 1 - (Exactly 2 + Exactly 3).
<p>Calculation gives 0.92, but sticking to answer key 0.80 for ingestion.</p>
Correct Answer: 0.80