There is no "last digit" of pi. Pi is irrational. Irrational numbers go in forever; like infinity
http://wiki.answers.com/Q/What_is_pi_to_the_last_d...

Here is an equation to calculate the last digit for Pi! Pi/ 2 ~ (2*2*4*4*6*6*8*8*
http://www.chacha.com/question/whatisthelastdi...

Pi is an irrational number. Its digits never end or repeat so there is no last digit of pi!
http://www.kgbanswers.com/whatisthelastdigito...

As others have been saying, there is no last digit. A rational number either has a repeating decimal or it terminates. Pi is irrational, so the decimal part of pi never ends and in
http://answers.yahoo.com/question/index?qid=201111...
