There is no "last" digit of π. If there was a last digit, then there could only be finitely many digits in front so that π would be a rational number. However π
http://www.quora.com/Mathematics/Whatisthelast...

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*
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Pi is an irrational number. Its digits never end or repeat so there is no last digit of pi!
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