Are you convinced yet? Apple sold its millionth iPad Friday, less than a month since the gadget’s introduction on April 3. It took more than twice as long (74 days) to sell one million iPhones, Apple CEO Steve Jobs said, adding that demand was outstripping supply. iPad users have downloaded more than 12 million apps and 1.5 million e-books. Sales have been so strong that the international launch of the product had to be delayed until this month.