HERE I have 15 six sided dice

3 are red and each has 3 skulls on them (i.e. each dice has 3 skulls and 3 blank sides)
5 are brown, each with 2 skulls on them
7 are green, each with 1 skull on them

I put all 15 dice in a bag, draw three out at random and roll them.

What are the odds that I will roll at least one skull with those first three dice?

 Number of times to run simulation.
Go!

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