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For the following distribution:
begin{tabular}{|l|c|c|c|c|c|}
hline Class & $0-10$ & $10-20$ & $20-30$ & $30-40$ & $40-50$
hline Frequency & $10$ & $12$ & $15$ & $20$ & $9$
hline
end{tabular}
The sum of lower limits of the median class and modal class is
begin{tabular}{|l|c|c|c|c|c|}
hline Class & $0-10$ & $10-20$ & $20-30$ & $30-40$ & $40-50$
hline Frequency & $10$ & $12$ & $15$ & $20$ & $9$
hline
end{tabular}
The sum of lower limits of the median class and modal class is
- (a)$30$
- (b)$50$
- (c)$40$
- (d)$60$
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Ans: (B) $50$