0001#Sample Text following; Euler worked in almost all areas of mathematics: geometry, infinitesimal calculus, trigonometry, algebra, and number theory, as well as continuum physics, lunar theory and other areas of physics. He is a seminal figure in the history of mathematics; if printed, his works, many of which are of fundamental interest, would occupy between 60 and 80 quarto volumes. Euler's name is associated with a large number of topics.#2#0001#This is the first0 choice option.#0002#This is the second0 choice option.#0002#This is the next sample text; The development of infinitesimal calculus was at the forefront of 18th Century mathematical research, and the Bernoullis family friends of Euler were responsible for much of the early progress in the field. Thanks to their influence, studying calculus became the major focus of Euler's work.#3#0001#This is the first1 choice option.#0002#This is the second1 choice option.#0003#This is the third1 choice option.#0003#Euler linked the nature of prime distribution with ideas in analysis. He proved that the sum of the reciprocals of the primes diverges. In doing so, he discovered the connection between the Riemann zeta function and the prime numbers; this is known as the Euler product formula for the Riemann zeta function.#3#0001#This is the first2 choice option.#0002#This is the second2 choice option.#0003#This is the third2 choice option.#