What is the probability of rainy weather during the craft fair?

• A. 0.10
• B. 0.20
• C. 0.30
• D. 0.40

Answer: (A)

Probability is the likelihood of an event occurring, expressed as a decimal between 0 and 1. If the forecast indicates a 10% chance of rain, that translates to 0.10. The decimal form lets you compare and combine probabilities easily, and 0.10 reflects a relatively low risk of rainy weather for the craft fair. The other options (0.20, 0.30, 0.40) would correspond to 20%, 30%, and 40% chances of rain, respectively, which would require forecast data showing a higher likelihood. Since the given information indicates a 10% chance, 0.10 is the correct probability.