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.
1956 - Avis is acquired by investment group led by Amoskeag Company. Avis, Inc. is formed as a formal holding company for the company's related business interests. 1960 - Avis Europe corporate offices are established in the United Kingdom. 1962 - Investment banking firm, Lazard Freres & Company, buys Avis.