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[" 23.The activity of a sample reduces f...

[" 23.The activity of a sample reduces from "A" to "(A_(0))/(sqrt(3))" in one hour."],[" The activity after "3" hours more will be "],[[" (1) "(A_(0))/(3sqrt(3))," (2) "(A_(0))/(9)],[" (3) "(A_(0))/(9sqrt(3))," (4) "(A_(0))/(27)]]

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