The sum of a number and its square is 420 what are the ...

Twenty-One, an American game show that became the center of the 1950s quiz show scandals when it was shown to be rigged. The number on the logo for the American game show Catch 21 The total number of Bitcoin to be released is 21 million “[1]” References Wikimedia Commons has media related to 21 (number). ^ "Sloane's A016105 : Blum integers". ................
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