The Pi Trivia Game

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Finally this is your chance to pay tribute to the magnificent transcendental number that we have all grown to love! Here are 25 questions (given to you 5 at a time), picked randomly from my pi question database. Get ready for the thrill of your lifetime, the ultimate challenge, The Pi Trivia Game!

1. If one were to find the circumference of a circle the size of the known universe, requiring that the circumference be accurate to within the radius of one proton, how many decimal places of pi would need to be used?

2 million
39
11
48,000
300

2. One of the best-known series representations of pi is the Gregory-Liebniz formula, which is:

pi = 1 + 1/2 + 1/3 + 1/4 + ...
pi = arctan 1 + arctan 1/3 + arctan 1/5 + ...
pi/4 = 1 - 1/3 + 1/5 - 1/7 + ...
pi/6 = 1 - 2/3 + 1/5 - 2/7 + ...
pi = 3 + .1 + .04 + .001 + .0005 + ...

3. Are pi's digits periodic?

Yes; the digits repeat themselves after every 6000 decimal places.
No; only women, not numbers, are unfortunate enough to be periodic.
Maybe; not enough digits of pi have yet been calculated to know if they start eventually repeating themselves.
Yes; every infinitely long number has to start repeating itself sometime.
No; every periodic number is rational, but pi is irrational.

4. For a given value of N: if you add up the first N decimals of pi (excluding the initial 3), the sum is 666 (not to imply that pi is at all satanic). What is the value of N?

144
169
148
123
121

5. Among the digits of pi currently known, the concentrations of each of the digits 0 - 9 are pretty much equal. However, in the first 30 digits of pi's decimal expansion, one number is conspicuously missing. Which number is it?

7
2
0
8
6

eve@eveandersson.com