Answer:
5 × 10²
Explanation:
2 × 10^-3/4 ×10^-6
= 2/4 × 10^-3 - -6
= 1/2 (10^-3 + 6)
= 1/2 ×(10^3)
= 0.5 × 10^3
= 500
= 5 × 10²
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