3.5 years
3.0 years
2.5 years
2.0 years
Correct answer is A
Median = (\(\frac{n + 1}{2})^{th}\)
= \(\frac{20 + 1}{2} = \frac{21}{2}\)
= 10.5
= \(\frac{{\text{10th term and 11th term}}}{2}\)
= \(\frac{3 + 4}{2} = \frac{7}{2}\)
= 3.5yrs
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