2 version of the old and the new

3 issue of the new version.

1. Who is the author of the first scientific work on the natural numbers?
a) Euclid;
b) Archimedes;
c) Diophantus.

2. Which of the great mathematicians belongs to the phrase: "In geometry, there is no royal road"?
a) Euclid;
b) Archimedes;
c) Diophantus.

3. As the resulting set of complex numbers?
a) adding the imaginary unit to a plurality of real numbers;
b) adding the imaginary unit to the set of irrational numbers
c) adding the imaginary unit to the set of rational numbers.