Answer:
Do you have a picture of the problem so I can see it
4
Hope it’s right
Best luck with your studying
Answer:
Therefore the required probability is 
Step-by-step explanation:
The probability of success is 
The number of trial = 4
X= the items survive out of 4
p =the probability of success and q = the probability failure.
p=
and 



Therefore the required probability is 