10 Questions
| Attempts: 961

Questions and Answers

- 1.What are the first four digits of Pi after the decimal point?
- A.
1415

- B.
3256

- C.
2917

- D.
5971

- E.
6355

- 2.Which four digits come after 3.1415 in Pi?
- A.
5692

- B.
1234

- C.
8264

- D.
9265

- E.
7539

- 3.What is the oldest document known relating to the existence of Pi?
- A.
The Suse tablette from the Babylonians

- B.
The Rhind papyrus from the Egyptians

- C.
Paper on the method of Archimedes

- D.
A carved stone

- 4.Simon Plouffe, the famous Canadian mathematician who discovered the BBP formula allowing to calculate the n-th digit of Pi in base 2, was already famous in 1975 in the Guinness record book. What for?
- A.
He calculated 2 million decimals on a Cray

- B.
He memorised 4096 decimals of π

- C.
He cooked the biggest Apple Pie (3m in circumference)

- D.
By traveling 314 km on his hands

- 5.What is the actual record of a number of decimals calculated? (ouch, this question will be quickly obsolete, so let us indicate the date as 20th September 1999)
- A.
206,158,430,000

- B.
206,000,000,000

- C.
68,719,470,000

- D.
6,442,450,938

- 6.In 1997 Fabrice Bellard found a formula that accelerated the calculation of the n-th digit of Pi compared to the BBP formula. By how much?
- A.
16%

- B.
27%

- C.
43%

- D.
52%

- 7.How are the first few digits of Pi written in binary?
- A.
11.1110111101111100

- B.
1.10111011010010011

- C.
101.110101000111100

- D.
11.0010010000111111

- 8.The definitions of Pi through geometry because of the Euclidian geometry and integral calculation from below. Mathematicians now go for analytical definitions a lot more abstract. Notably, the famous paper of Bourbaki Pi is defined as:
- A.
The constant such that exp(i*π)=-1

- B.
The double of the unique root to the equation cos(x)=0 between 0 and 2

- C.
The real number that appears in the differention 2*π*e(x) of the function e(x), unique continu homorphism of the additive group R on the multiplicative group U of the complex number of absolute number 1

- D.
The perimeter of an apple π divided by it's diameter

- 9.Another important concept, the universal number. We don't know if Pi is one. What practical consequence could this have if the hypothesis were checked?
- A.
We could find the Bible and our own biography at a precise place in the decimals of π translate in letters

- B.
We could calculate the size of the universe

- C.
We could finally have a discussion with π

- D.
We won't need to calculate it's decimal anymore because we could guess them using the previous one

- 10.A contemporary mathematician and who participated in the research of Pi owned a number plate whose number was P 314159. Nowadays it's in hexadecimal, who was it?
- A.
Simon Plouffe

- B.
David Bailey

- C.
Peter Borwein

- D.
David Chudnovsky

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