Problem with discrete probability level 2 question 3

The question is: https://brilliant.org/practice/discrete-probability-level-2-3-challenges/?p=3

However, the question doesn't say that you cannot pick the same diagonal twice which makes the solution wrong.

I think the questions is unfit for the test in its current form.

#Combinatorics

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`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
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Comments

I believe you are referring to this problem.

Thanks. I've updated the text from

In a convex hexagon, two diagonals are drawn at random. What is the probability that the diagonals intersect inside the hexagon?

In a convex hexagon, two diagonals are drawn at random. What is the probability that the diagonals intersect inside the hexagon at 1 point?

In the future, if you have concerns about a problem's wording/clarity/etc., you can report the problem. See how here.

Brilliant Mathematics Staff - 3 years, 4 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$