1. Generate a random set of numbers using the random() expression. To determine the number of random numbers generated, you can use a loop - repeat random(4,10) times. Create text, set text to random(x,y). Random() can be set to a negative number
2. One way to sort your randomly generated numbers in order, probably in an array. There are multitudes of ways to do this. Ref: https://en.wikipedia.org/wiki/Insertion_sort Edit: Just use the sort action!
A simple way I can think of to simulate the effect you are looking for, is to compare the selected number with ALL the other numbers. If ANY other number is less than the selected number, then fail and start over, set points, ect. Else if no numbers are less than the selected number, then delete that number and move on.
This will only work for numbers, and in order from smallest to greatest or vice versa.