And also here's an extra ticket for who finds out the correct answer of the following question:
hint: For example, the unit digit of 13.14159 is 3 <-- (the last digit of integer part)
Find the unit digit of
ps : a simple demonstrate of solution is required if you provide a correct answer
ps : a simple demonstrate of solution is required if you provide a correct answer
hint: For example, the unit digit of 13.14159 is 3 <-- (the last digit of integer part)