Individual Research Projects Section 9.2

Project 9.3

The German artist Albrech Durer (1471-1528) is not only a Renaissance artist, but also somewhat of a mathematician. Do some research on the mathematics of Durer.

Project 9.4 Celebrate the Millennium

a. Consider the product (1)(2)(3) … (1,998)(1,999)(2,000).  What is the last digit?

b. Consider the product (1)(2)(3) … (1,998)(1,999)(2,000). From the product, cross out all even factors, as well as all multiples of 5.

Now, what is the last digit of the resulting product?