Which formula does Google use to rank keyword-targeted ads on Google Search?

[WoodsPainting]

Which formula does Google use to rank keyword-targeted ads on Google Search?

[jayam]

The two parameters used by Google AdWords to determine the Ad Rank are cost-per-click (CPC) bid* and Quality S... Your Ad position on content and search pages is based on their Ad Rank. The ad with the highest Ad Rank will appear in position number 1 and the others with a lower Ad Rank will following down the page.

[neelseowork]

Which formula does Google use to rank keyword-targeted ads on Google Search?

Google uses Algorithms to rank keywords not a formula.