Biology

Biology, 03.10.2019 10:30, 0gNanaa

The half-life of cobalt 60 is 5.3 years. what fraction of a sample remains after 21.2 years?
a.
one half
b.
one quarter
c.
one eighth
d.
one sixteenth

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The half-life of cobalt 60 is 5.3 years. what fraction of a sample remains after 21.2 years?
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