If the number is ` 17^(256)` , find the last digit

Explanation

To find the last digit of \( 17^{256} \), we can use the concept of modular arithmetic. Specifically, we will find \( 17^{256} \mod 10 \) to determine the last digit.

### Step-by-Step Solution:

1. **Identify the Base and the Exponent**:
We need to find the last digit of \( 17^{256} \). The last digit of a number can be found by calculating the number modulo 10.

2. **Simplify the Base Modulo 10**:
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