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CEMC Gauss (Grade 8), 2001

Algebra Difficulty 1.0 Junior Find the answer Canada

What number should be placed in the box to make $10^4 \times 100^{\square} = 1000^6$ ?

(A) $7$ (B) $5$ (C) $2$ (D) $\dfrac{3}{2}$ (E) $10$

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