The 20 Answers Inside a "Magic 8 Ball"

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The 20 answers inside a Magic 8 Ball are:

It is certain
It is decidedly so
Without a doubt
Yes – definitely
You may rely on it
As I see it, yes
Most likely
Outlook good
Yes
Signs point to yes

Reply hazy, try again
Ask again later
Better not tell you now
Cannot predict now
Concentrate and ask again

Don't count on it
My reply is no
My sources say no
Outlook not so good
Very doubtful

10 of the possible answers are affirmative (), 5 are negative (), and 5 are non-committal (). Using the Coupon collector's problem in probability theory, it can be shown that it takes, on average, 72 shakes of the Magic 8 Ball for all 20 of its answers to appear at least once.