Can You Answer These 5 Riddles That Will Test Your Logic and Exercise Your Mind   Want to check your IQ? Here’s a good chance to test yourself. Identify the words from these mind-blowing questions and prove you’re a true genius. What begins with T, ends with T, and is full of T? What runs around the whole yard without moving? What do the letter T and an island have in common? Tear one off and scratch my head, What once was red is black instead. What is it? I am big on Saturday and Sunday. I am small on Tuesday, Wednesday, and Thursday. I am not in on Monday and Friday. What am I?   Better luck next time. You’ve the potential to a lot better Nice job! You’re a genius.