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/sci/ - Science & Math

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6003811 No.6003811[DELETED]  [Reply] [Original]

Is Who wants to be a millionaire just a game of luck?

I mean, there's 33.34% chance of being right unless the person happens to know the right answer, and lifelines can only get you so far into the game.

Let's say there are 15 questions with 4 choices each. Let's also say there are 3 lifelines: call-a-friend, 50-50, and ask-the-audience.

For each of the 15 questions, there is only 1 correct answer, and 3 incorrect answers, so immediately your chances are 1/3 = 33.34%. You can use each lifeline once. Using phone-a-friend, let's say gives you a 95% chance the person you call is correct. So 1 question is 95%. Similarly, we can say ask-the-audience gives you a 95% chance. Finally, 50-50 will remove 2 wrong answers, so you have 1 right answer and 1 wrong answer, so you basically know the answer. To recap:

Question 1: 33.34%
Question 2: 33.34%
Question 3: 33.34%
Question 4: 95% <--- ask-the-audience
Question 5: 33.34%
Question 6: 33.34%
Question 7: 33.34%
Question 8: 33.34%
Question 9: 95% <--- phone-a-friend
Question 10: 33.34%
Question 11: 33.34%
Question 12: 33.34%
Question 13: 33.34%
Question 14: 33.34%
Question 15: 100% <--- 50-50
Total: 690.08%
Divided by 15 questions = 46.00%
So basically, it's more a less a game of chance, but more than half the people on the show will lose, so it's not very fair. That show is making tons of money off of people.

>> No.6003815

>>>/b/503599538

Go back there and answer the questions.

>> No.6003820

>>6003811
If there are 4 possible answers, your chances are 1/4, not 1/3.

>> No.6003881

I haven't seen this pasta in a while. It's better than the .999... =/= 1 threads at least.

>> No.6003887

http://forums.xkcd.com/viewtopic.php?f=17&t=101806
I googled this, and wow, so many people taking the OP post seriously
I expected more from the XKCD forums

>> No.6005120

1 out of 4 answers is correct.

1/4 = 25%

>> No.6005164

>>6003811
8/10

>> No.6005168

>>6005120
But there is 1 correct answer, and only 3 incorrect answers.

4-1=3
1/3=33.34%