Answer: who
Explanation: whom is past tense you already used past tense in the word called
Given:
Total students to board the Hogwarts Express = 100 students
The first student occupies the wrong seat.
Each student occupies the allocated seat (if available) if not, he chooses a seat at random.
Determine the chance that the last passenger will get to his seat:
1/99 = 0.01 * 100 = 1.01%
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-a research paper by an expert
Because it's reliable.
A fan club is going to be bias.
So is a journal entry.