Landmark numbers for this ser of numbers 12, 16, 23, 15, 16, 19, 18

To find the landmark numbers for a given set of numbers, you need to identify the minimum value, maximum value, and any other notable numbers in between.

For the set of numbers you provided:
12, 16, 23, 15, 16, 19, 18

Step 1: Find the minimum value:
The minimum value is the smallest number in the set.
In this case, the minimum value is 12.

Step 2: Find the maximum value:
The maximum value is the largest number in the set.
In this case, the maximum value is 23.

Step 3: Identify any other notable numbers:
These are numbers that stand out in the set but are not the minimum or maximum value. They can include repeated values as well.

In this case, the other notable numbers are:
- 15 (the second smallest)
- 16 (repeated twice)
- 19 (stands out among the other numbers)
- 18 (also stands out but is not the maximum or minimum)

So the landmark numbers for this set are:
Minimum value: 12
Maximum value: 23
Other notable numbers: 15, 16, 19, 18