Question

Q.
Two distinct points A and B
are chosen at random from 15
points equally spaced around
a circle centred at o such that
each pair of points A and B
has the same probability of
being chosen. The probability
that the perpendicular
bisector of OA and OB
intersect strictly inside the
circle can be expressed in the
form, where mr are relatively
prime positive integers. Find
m+n.
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Answer 1

Answer:

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