[cynwoody]

My guess is it would respond with an answer of less than 6 decimal places.

The correct answer is that there is no last digit of pi.

I posed the question to my Google Home, and she answered 2.7 trillion (the current record for human attempts) and then cited the true fact that the expansion is infinite.

[plain talk]

The correct answer is that there is no last digit of pi.

Yeah I think we all know that. :-)