Probabilities can be written as fractions, decimals or percentages on a scale from 0 to 1. Knowing basic facts about equally likely outcomes can help to solve more complicated problems. Probability is ...

We've heard it all our lives, but do we really stop to understand what it means? "There's a 40 percent chance of rain today." Does it mean: A) That 40 percent of the area is going to get rain B) That ...