Question

A spinner with 7 equally sized slices is shown below. (5 slices are red, 1 is blue, and 1 is yellow.) The dial is spun and stops on a slice at random. What are the odds in favor of landing on a red slice?

Answer 1

Since the spinner has 7 equally sized slices, then the probability of the dial landing on a red slice is:

$p=\frac{5}{7}\Rightarrow p=0.7142857143...$

So, the odds of it landing on a red slice are approximately 71.4%.

that is:

$5:7$