Probability of killing RaOne 0.01% ... How?

Raone may/may not be a success ... but they confidently articulate 0.01% of chance of RaOne loosing ... How did they come up with this number? ROMA number or ROSA number?

Here is my attempt ... just because 0.01% is highlighted [ if you have seen this movie or know the story the below may make sense ]

P(Raone loosing or SRK surviving) =1/10000 or 0.01%

So which essentially translates to 10^4 ways of killing RaOne and only one way will be successful.

since killing is only possible in level 3 .... the chances of Raone loosing will not happen in earlier rounds.

In the last scene there are 10 raones ..... so 10^1
Each one mandated to have the heart ..... so 10^2
Each one can shoot him back ..... so 10^3
He has to shoot the Actual Raone to heart(he must not miss) .... 10^4

So SRK should shoot the "right" raOne out of the 10 raones ... With heart, Before they shoot him and actually shoot the raone @ the heart.

QED ... Now actually since its a movie there is no need to justify all this.