Nuclide A has a half-life of 4 days, and nuclide B has a half-life of 16 days. At the beginning of an experiment, a sample contains $2 ^ { 18 }$ nuclei of nuclide A and $2 ^ { 12 }$ nuclei of nuclide B. How long will it take before the numbers of nuclei of the two nuclides are equal?

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The Answer of Nuclide A has a half-life of 4 days, and nuclide B has a half-life of 16 days. At the beginning of an experiment, a sample contains $2 ^ { 18 }$ nuclei of nuclide A and $2 ^ { 12 }$ nuclei of nuclide B. How long will it take before the numbers of nuclei of the two nuclides are equal?

Nuclide a Has a Half-Life of 4 Days, and Nuclide 2182 ^ { 18 }218

Nuclide a Has a Half-Life of 4 Days, and Nuclide $2 ^ { 18 }$