What are the odds of a Quadruple Protect?

Question

So, I had a Iron Crown against a damaged Heatran. I used Calm Mind, and the Heatran used Lava Plume, crit, and Burned. Then the Heatran got a QUADRUPLE Protect, which allowed the burn to kill me. Just how unlucky was I?

Answer 1

If you already successfully used 3 protects, the chance of the fourth one succeeding is 1/27. The chance of all 4 succeeding is 1 * 1/3 * 1/9 * 1/27 = 1/729.
source

Comments

Thanks for resuming my typical luck!