The Half-Life of ¹⁴C Is 5730 Years

question 139

Multiple Choice

The half-life of ¹⁴C is 5730 years. Archaeologists dig up a seed that contains 0.25 parts per trillion ¹⁴C. If it originally contained 1 part per trillion ¹⁴C, how old is the archaeological specimen?

• A)11,460 years
• B)5730 years
• C)17,190 years
• D)22,920 years
• E)28,650 years

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A method of representing the four types of categorical propositions and their logical relations in a visual diagram.

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