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What is the numerical value of (8.0 × 103) (2.0 × 102) ?
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A postal service that provides the sender with a mailing receipt and electronic verification that an article was delivered or that a delivery attempt was made.
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Something so unique or valuable that it cannot be replaced if lost or destroyed.
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A person's handwritten mark or name written on a document as evidence of identity or intent.
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An individual employed to deliver mail and packages to residences and businesses, representing postal services.
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