### Instruction: If n = 8^8 – 5, what is the units digit of n?
Answer Choices: (A) 0 (B) 1 (C) 2 (D) 3 (E) 5.### Response: Let's solve the multi-choice question step by step.
8 ^ 8 - 8 = 8 (8 ^ 7 - 1)
==> 8 (2 ^ 21 - 1)
Last digit of 2 ^ 21 is 2 based on what explanation LiveStronger is saying. 2 ^ 24 - 1 yields 2 - 1 = 1 as the unit digit. Now on multiply this with 5, we get unit digit as 5
The answer is E