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[" A "300" gram radioactive sample has h...

[" A "300" gram radioactive sample has half life of "],[" 3hour's.After "18" hour's remaining quantity will be: "],[[" (1) "4.68" gram "," (2) "2.34" gram "],[" (3) "3.34" gram "," (4) "9.37" gram "]]

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