Probability in Play: Probability comic video

0:00 LearnFun Comics. Probability in Play. He’s fudging the fun! Can Momo spot the glitch?

0:06 Dicey Town. Momo plays at the fair.

0:10 A shiny, six-sided cube. Perfect for a game! Six sides, six outcomes.

0:15 Ah, this is fun! My cube always wins with just a tweak!

0:19 Unfair? But how does that work?

0:22 Probability is counting

0:24 Count ways you want. Divide by all ways. Result is probability

0:29 If you want red, and only red, it's special. Count ways, divide, and get probability!

0:35 See? I roll six times, and I always win!

0:38 3 red, 9 not. 3/12 = 0.25

0:43 3 ways want red. 12 ways total. 3 ÷ 12 = 0.25

0:50 Momo's method

0:52 Count ways you want. Count all ways total. Simplify if you can

0:57 Always count ways first. Count total, then divide. Simplify if you can. Result is probability!

1:03 Your turn, hero! Momo has 8 marbles, 3 are blue. What is the probability of picking a blue one? A: 0.3. B: 3. C: 8. D: 0.375

1:20 The answer is 0.375. 3/8 = 0.375

1:26 It’s simple! Just a tiny change here and there.

1:29 5 green, no blue, chance? A: 0.5. B: 1.0. C: 5. D: 10

1:41 The answer is 1.0. No blue means all are green, so chance is 5/5 = 1.0

1:48 The final battle Momo rolls a die 72 times. If he gets a 6 one-sixth of the time, how many 6s will he roll? A: 8. B: 12. C: 18. D: 24

2:05 The answer is 12. 72 ÷ 6 × 1 = 12

2:11 You can’t beat me! My unfair cube are unbeatable!

2:15 But there are still six sides! The cube should be fair!

2:18 The fair game returned, and Momo learned a lot.

2:22 Remember. Count ways you want Divide by total ways Result is probability

2:27 But what about the next game in town? A new mystery awaits.

2:32 Read this comic and answer the questions yourself, at learn fun dot in.