For the following distribution: Below: \( \begin{array}{lcccccc} & ...

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For the following distribution:
Below:
\( \begin{array}{lcccccc} & 10 & 20 & 30 & 40 & 50 & 60 \\ \text { Number of students: } & 3 & 12 & 27 & 57 & 75 & 80\end{array} \)
PV the modal class is
(a) \( 10-20 \)
(b) 20-30
(c) \( 30-40 \)
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