Answer:
General process of creating a data flow diagram:
Data flow diagram are used to represents the flow of data graphically and it is divided into physical and logical parameters. For creating the data flow diagram the steps involved are:
- Select the data and name the DFD.
- In DFD add the entity for start the process and add that process in data flow diagram.
- Add a data store and continuous adding that data into DFD.
- Now, adding the data flow in DFD and name the data.
Usually back to their start point. Or a random place on the map.
Answer And explanation
a)
has 1/ probability guess the correct source
b)
Each element in 
is mapped by / . There are 
So there are -1 elements.
number of target elements =
number of source elements = -1
probability = -1 /
c) Probability of the correct target element
1/
Silicon. Hope it helped.
~ThePirc
