What are your thoughts on these challenging brainteasers? Let us know in the comments and don’t forget to SHARE this post with your family and friends. For more riddles and puzzles, follow us on Facebook! Can you find the donkey of a different color?

IQ, short for intelligence quotient, is a measure of a person’s reasoning ability.Many colleges and universities also use exams similar to IQ tests to select students.

Think that you’re observant enough to spot the subtle differences between pictures? Get your eyes ready because this is tricky. In this spot the different pictures will have you in for a treat.