MediumStatistics & Data ScienceMiddle Stage (6–8)High School (9–10)High School (11–12)UndergraduateGeneralStatistics Basics › Probability and ChanceNumerical

A spinner has 10 equal sectors numbered 1 to 10.

Contributed by StemPy Lab

Try it on paper first. A hint, the key idea and the worked solution are here when you need them.

A spinner has $10$ equal sectors numbered $1$ to $10$ . Find the probability of (a) a prime number, (b) not a prime number, (c) a multiple of $4$ .

Need a reminder? The key ideaShow

A probability is a number from 0 to 1. With equally likely outcomes, $P = \dfrac{\text{outcomes we want}}{\text{all outcomes}}$ , and $P(\text{not } A) = 1 - P(A)$ .

The worked solution

Have you tried it?

Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.

← All Problems

← One forecaster says that the chance of a storm tomorrow is 1.3.A bottle cap is flipped 240 times. It lands top up 168 times. →

More onStatistics Basics › Probability and Chance

Discussion (0)

Loading…