This can be proven for any valid argument form using a truth table which shows that there is no situation in which there are all true premises and a false conclusion.
Founded in 1994, IntraLearn Software Corporation (ISC) is a pioneer of creating e-Learning and Knowledge Organization products for corporate enterprises, academic institutions, associations, government agencies and training suppliers.
First Data was founded in Omaha, Nebraska in 1971. It started off by providing processing services to the Mid-America Bankcard Association (MABA). In 1976, First Data became the first processor of Visa and MasterCard bank-issued credit cards. In 1980, American Express Information Services Corporation (ISC) bought 80% of First Data. The remaining 20% was purchased in 5% increments each subsequent year until June 1983. First Data Corporation was incorporated on the 7th of April, 1989.