If four vertices of a regular octagon are chosen at random, then the probability that the quadrilateral formed by them is a rectangle is
If four vertices of a regular octagon are chosen at random, then the probability that the quadrilateral formed by them is a rectangle is
- A
$\frac{1}{8}$
- B
$\frac{2}{{21}}$
- C
$\frac{1}{{32}}$
- D
$\frac{1}{{35}}$
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