The answers were posted here on a number of occasions. The correct answers for the Impossible Quiz, Impossible Quiz 2, and the first 2 chapters of The Impossible Quiz Book (all by Splapp-me-do) are at the related questions below.
The logo quiz app has over 700 logos to guess. You can use hints to help guess the answers, or there are many websites that have all the answers to the Logo Quiz (including images and the names). Please see related links section for for sites.
The Candy Logo quiz is a popular online game in which the player must identify the brand or company that is represented by its logo. The answers and complete walkthroughs of the game are available on various quiz websites.