**Fixed-Price**- Intermediate ($$) - Est. Budget: $25 - Posted

I need to create a formula to compute the number of possibilites from a combinatory script.
I have 500,000 pages. Each contains 20 ads (advertisements).
Each ad needs an unique text. A unique text is 25% maximum similar to another text.
First, I need to know how many text i have to create in total.
Second, each text will be built from 3 parts:
1. Seven combinable variations of sentences. Each sentences contain 2 variations with 3 possibilities each.These 10 combinations represents 60% of the text.
Example : {â€‹Wallmart,|Wallmart suggest you the |We advice you|Here is the presentation of the}â€‹ ThermomixTM31 {â€‹for only|as of|at the low price of}â€‹ 350â‚¬ .
2. 10% of the text is taken from a fixed list of 5000 sentences.
3. 30% is taken from the item specifics which are supposed to be considered as unique.
Please describe the formula criteria in your proposal.

**Skills:**Mathematica Mathematics