Difficult Riddles This is needed both for courage and hardcover books. Answer: spine Solution: Reveal Answer 3 0 Share with Facebook Comment You may also like.. Difficult Riddles What has four wings but cannot fly and uses the wind but does not know why? Answer: windmill Solution: Reveal Answer 0 0 Funny Riddles What do you call a horse that moves around a lot? Answer: Unstable. Solution: Reveal Answer 1 0 Tricky Riddles How much dirt is there in a hole that is 3 ft deep, and 9 inches in diameter? Answer: None, it is a hole Solution: Reveal Answer 0 0 Tricky Riddles A little pool with two layers of wall around it. One white and soft and the other dark and hard, amidst a light brown grassy lawn with an outline of a green grass. What am I? Answer: A Coconut. Solution: Show Answer A Coconut. Reveal Answer 0 0 Math Riddles How many pluses should we put between the digits of 987,654,321 to get a total of 99, and where? Answer: (6) 9 + 8 + 7 + 6 + 5 + 43 + 21= 99 (7) 9 + 8 + 7 + 65 + 4 + 3 + 2 + 1= 99 Solution: Show Answer (6) 9 + 8 + 7 + 6 + 5 + 43 + 21= 99 (7) 9 + 8 + 7 + 65 + 4 + 3 + 2 + 1= 99 Reveal Answer 1 0 Previous Next