make up a set of at least 12 numbers using the following landmarks:

minimum 3
maximum 9
median 7
mode 7

The lowest must be 3 and the highest must be 9. There should be at least two 7's (more than any other number), and there should be as many numbers less than 7 as there are greater than seven.

It is time to familiarize yourself what median and mode mean, if you don't understand that subject. The definitions must be in your reading materials somewhere.

Make up your own list of 12 (or more) numbers.