DO NOT POST OLD INFORMATION 3. (Euler's Theorem, 5pt) What is the last digit of 7^8984392344350386 (in its decimal expan
Posted: Fri May 20, 2022 3:30 pm
DO NOT POST OLD INFORMATION
3. (Euler's Theorem, 5pt) What is the last digit of
7^8984392344350386 (in its decimal expansion)? Explain how you did
it. Hint: can you reexpress "last digit" more mathematically, so
you can apply Euler's theorem? Hint 2: you can do this whole
problem in your head. No calculator required, just thinking.
3. (Euler's Theorem, 5pt) What is the last digit of
7^8984392344350386 (in its decimal expansion)? Explain how you did
it. Hint: can you reexpress "last digit" more mathematically, so
you can apply Euler's theorem? Hint 2: you can do this whole
problem in your head. No calculator required, just thinking.