Class	0-10	10-20	20-30	30-40	40-50	50-60
Frequency	3	9	15	30	18	5

The median class of the above frequency distribution

If $$\frac{(9^n \times 3^2 \times 3^n – (27)^n )}{((3^3 )^5 \times 2^3)}$$​= $$\frac{1}{27}$$​then the value of 'n' is

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The median class of the above frequency distribution