Aspinner is numbered from 1 through 10 with each number equally likely to occur. what is the probability of obtaining a number less than 3 or greater than 8 in a single spin?

Step-by-step explanation:

If each number X has the same probability of occur then the probability for each number is:

Note that X is a discrete random variable, and the probability of obtaining an X number is independent for each trial.

So the probability that X is less than 3 is:

But

So:

Also

Finally