LearnFun Comics#45
Probability in Play
He’s fudging the fun! Can Momo spot the glitch?
Starring Momo
Probability · Class 9
Probability · Class 9
Probability in Play: Probability comic
Dicey Town. Momo plays at the fair.
Momo: A shiny, six-sided cube. Perfect for a game! Six sides, six outcomes.
Baron Blunder: Ah, this is fun! My cube always wins with just a tweak!
Momo: Unfair? But how does that work?
Probability is counting
Count ways you want
Divide by all ways
Result is probability
Momo: If you want red, and only red, it's special. Count ways, divide, and get probability!
Baron Blunder: See? I roll six times, and I always win!
Momo: 3 red, 9 not. 3/12 = 0.25
3 ways want red
12 ways total
3 ÷ 12 = 0.25
Momo's method
Count ways you want
Count all ways total
Simplify if you can
Momo: Always count ways first. Count total, then divide. Simplify if you can. Result is probability!
Your turn, hero!
Baron Blunder♥♥♥
Momo has 8 marbles, 3 are blue. What is the probability of picking a blue one?
0.375. 3/8 = 0.375
Baron Blunder: It’s simple! Just a tiny change here and there.
5 green, no blue, chance?
1.0. No blue means all are green, so chance is 5/5 = 1.0
The final battle
Baron Blunder♥♥♥
Momo rolls a die 72 times. If he gets a 6 one-sixth of the time, how many 6s will he roll?
12. 72 ÷ 6 × 1 = 12
Baron Blunder: You can’t beat me! My unfair cube are unbeatable!
Momo: But there are still six sides! The cube should be fair!
The fair game returned, and Momo learned a lot.
The End?
Villain card won! Answer again in a few days and it turns gold.
Remember
- Count ways you want
- Divide by total ways
- Result is probability
But what about the next game in town? A new mystery awaits.
A comic book about Probability. Follow Momo, learn the idea, and answer three questions to beat Baron Blunder.