\(125 \times 125 \times 125 \times 125 \times 125 = 5^?\)
Answer: C
\(125 \times 125 \times 125 \times 125 \times 125 = (5^3 \times 5^3 \times 5^3 \times 5^3 \times 5^3 \times ) = 5^{(3+3+3+3+3+)} = 5^{15}\)