Answer: a) 
Step-by-step explanation:
Given : For safety reasons, four different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hills bank.
Each of the four systems detects theft with a probability of .99 independently of the others .
Probability for independent events
occurs together =
.
Then, the probability that when a theft occurs, all four systems will detect it
= (0.99) x (0.99) x (0.99) x (0.99)

Hence, the probability that when a theft occurs, all four systems will detect it is
.
Hence, the correct answer is a)
.
A lot like shoot i think 20 or more
Answer:
Step-by-step explanation:
I think option 4 is the correct answer
24
It goes into 24 once and into 48 twice
The answer is a <span>42.857% chance which is 3/8
I'm glad to help, I hope this was helpful </span>