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mesospheric- level clouds called noctilucent clouds, are sunlit for quite some time after dark due to their altitude. The last light reaching an observer at A on Earth occurs at sunset. The last light...

in a certain middle school there are 1000 students and 1000 lockers. At the end of each year, the students lined up in alphabetical order and performed the following strange ritual: the first student...

If a dozen packages of seeds cost $80.64 what is the average cost per package Pete $11.52 receipts that were priced at three packages for 288 how many packages did he buy 25.25 is...

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