Statement 1: 2/3 of the students in Section 1 are female

We don't know the ratio of students in Section 2 and the ratio of students in each section -- Insufficient

Statement 2: 1/2 of the students in Section 2 are male

We don't know the ratio of students in Section 1 and the ratio of students in each section -- Insufficient

Combining 1&2: Still we don't know the ratio of students in each section.

Both Statement together are insufficient, Answer E

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