Find the unit place digit in 71 x 72 x 73 x 74 x 76 x 77 x 78 x 79.

Options

A. 2
B. 9
C. 4
D. 6

Explanation

To find the unit place digit of the product \( 71 \times 72 \times 73 \times 74 \times 76 \times 77 \times 78 \times 79 \), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the unit digits**:
- The unit digit of \( 71 \) is \( 1 \).
- The unit digit of \( 72 \) is \( 2 \).
- The unit digit of \( 73 \) is \( 3 \).
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