00:01
In this problem, it is said that a sales representative has 35 customers throughout the state and is planning a trip during which 20 will be visited.
00:08
We need to determine in how many orders the visits can be made.
00:12
Now, there are a total of 35 customers, and out of them, any 20 need to be selected at random.
00:19
Now, we can do this in 35p20 ways.
00:23
Here we use p, which represents permutation, and we use permutation in our combination in this case, because the order of selects.
00:30
Of the customers matters.
00:32
This is because we have been asked in how many orders can the visits be made.
00:36
So the order of selection matters.
00:38
That is, the first person we select the sales representative will visit first...