What are the odds of completely missing under the following circumstances?

Concussion Missile + Marksmanship

firing on an X-wing (so, two evade dice).

What are the odds of completely missing under the following circumstances?

Concussion Missile + Marksmanship

firing on an X-wing (so, two evade dice).

Short answer: Slim. You have to roll 3-4 blanks while your opponent rolls 2-1 evade results.

Assuming your opponent doesn't do a defensive focus

The 4 blank variation is (1/256)(39/64), = 39/16,384, or appx 00.24% of the time. This gets added to the 3blank vs 2 evade variant, which is a bit likelier.

Almost non-existent.

I know there are others who do actual statistics with those things but you're rolling 4 dice with a 4/8 chance of getting a [hit] or [crit] from each, and a 2/8 chance of getting an [eye] which is turned into a [hit] by Marksmanship, plus a 2/8 chance of getting a [blank] although the Concussion Missile will turn one of those into a hit.

You have an extremely good chance of ending up with three or more dice showing [hit] or [crit] which is more than an X-Wing's two evade dice could negate.

Yes but i have shite luck so i want to know what the odds are. That way when i do fail completely i can tell my friend "that attack had a ____% chance of missing" so he can know how much i want to punch him in his balls.