Answer:
7,500,001 votes
Explanation:
total number of votes available is 30 million (= 10 million shares x 3 directors).
If there are seven candidates in the election, then the minimum number of votes needed for a candidate to be elected is one fourth of the votes = 30 million / 4 = 7,500,000 votes.
If any candidate receives at least 7,500,001 (7,500,000 votes + 1 vote) then the remaining 22,499,999 votes will be divided between the other six candidates. Mathematically it is impossible for more than two candidates to get at least 7,500,001 votes each.