The probability of not drawing a black shoe is 4/5. Since you replace the shoe each time, you multiply 4/5 by 4/5 by 4/5, which equals 64/125. The probability of not drawinga black shoe is 64/125.
Guest stop being rude. You make rude comments all the time so just stop. Nobody likes this so just STOP.
Parm how do u know my "tone" is? You are not sitting next to me right now.
Ok got it.
Wait what. You said your birthday is on 30th....... Or is that when you celebrated it?