80% of software problems are caused by 20% of bugs.
80% of the effects come from 20% of the causes.
80% of your sales come from 20% of your clients.
80% of value is achieved with the first 20% of effort.
80% of customers only use 20% of software features.
80% of sales come from 20% of your products.
80% of your complaints come from 20% of your customers.
80% of wealth is owned by 20% of people.
80% of sales come from 20% of your salespeople.
20% of people experience 80% of the suffering.
80% of project politics come from 20% of your stakeholders.
80% of exam preparation is done at last 20% of the study holidays.