#### Sample Question

What is the speed of light in vacuum?

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What is the speed of light in vacuum?

- [%3\;\mathrm x\;10^8\;\mathrm m/\mathrm s%]
- [%3\;\mathrm x\;10^8\;\mathrm{mi}/\mathrm s%]
- [%3.0\;\mathrm{mi}/\mathrm s%]
- [%3.0\;\mathrm{m}/\mathrm s%]

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