Probability at Play
In this game, you toss rings onto colored pegs. Each time you toss a ring, it will land
on one of the pegs. The probability that a ring will land on a peg is 1. The chart below
shows the number of pegs of each color.
Peg Color White
Red Orange Yellow Green
15% 25% 1%
5% 10% 2% 20% 15%
for One Ring
Calculate the probability of a ring landing on each color. Express each probability as a
percent in the table.
Suppose you were in charge of this game at a carnival. You have 9 prizes valued from $1
to $9. Each peg color has a different prize. How would you decide which color gets the
$1 prize? the $9 prize? Explain your answer.
Sample answer: The red peg should be $9 since
it’s the least likely and the pink should get $1 since
it’s the most likely. I would determine the other
prizes from least to greatest.
If you could pick a color and then win a prize if another player’s ring landed on that
color, which color would you pick? Why?
Sample answer: I would pick pink because it has the
best chance of winning a prize.
Extend It How could you change the ring toss game to make it more likely that someone
will get the $9 prize? less likely?
Check students’ answers.