Kevin installed a certain brand of automatic garage door opener that utilizes a transmitter control with four independent​ switches, each one set on or off. The receiver​ (wired to the​ door) must be set with the same pattern as the transmitter. If six neighbors with the same type of opener set their switches​ independently.The probability of at least one pair of neighbors using the same​ settings is 0.65633
Step-by-step explanation:
Step 1
In the question it is given that
Automatic garage door opener utilizes a transmitter control with four independent​ switches
So .the number of Combinations possible with the Transmitters =
2*2*2*2= 16
Step 2
Probability of at least one pair of neighbors using the same settings = 1- Probability of All Neighbors using different settings.
= 1- 16*15*14*13*12*11/(16^6)
Step 3
Probability of at least one pair of neighbors using the same settings=
= 1- 0.343666
Step 4
So the probability of at least one pair of neighbors using the same settings
is  0.65633