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Riddle: The land was white the seed was black It'll take a good scholar to riddle me that. What am I? Show Answer Hide Answer

Riddle: When the celebrated German mathematician Karl Friedrich Gauss (1777-1855) was nine he was asked to add all the integers from 1 through 100. He quickly added 1 to 100, 2 to 99, and so on for 50 pairs of numbers each adding to 101. Answer: 50 X 101=5,050. What is the sum of all the digits in integers from 1 through 1,000,000,000? (That's all the digits in all the numbers, not all the numbers themselves.) Show Answer Hide Answer

Riddle: A box of hardware contains nuts and bolts. The bolts account for 25 percent of the number of items in the box. What percentage are the bolts of the entire box? Show Answer Hide Answer

Riddle: What goes through the door without pinching itself, sits on the stove without burning itself, sits on the table, and is not ashamed? Show Answer Hide Answer

Riddle: Black I am and much admired, men seek me until they're tired. When they find me, they break my head, and take from me my resting bed. What am I? Show Answer Hide Answer

Riddle: Marco and Bob have been the best friends ever since they were little kids. They are also very competitive. Throughout the years they have challenged each other to do both physical and mental challenges. And they completed the challenge. But one day Marco thought of something to challenge Bob to do - something he could start but never finish. The average man could do it and so could Mark and they were both the same sex and the same size. It is a physical challenge. Can you figure out what it was? Show Answer Hide Answer

Riddle: You have two container, a 5 gallon and a 3 gallon container. How do you measure out 4 gallons? Show Answer Hide Answer

Riddle: There are three guards and three prisoners who need to cross a river. Their boat only holds two people at a time, and the number of prisoners must NEVER be allowed to outnumber the number of guards on either side of the river; otherwise, the prisoners will overpower the guards and, well, the story will come to an abrupt end. List each of the trips that need to be made and who is in the boat, and who is on each of the riverbanks during each trip. How many trips it will take to safely transport all of the guards and prisoners across the river? Show Answer Hide Answer

Riddle: A woman is walking down a street night at a constant pace. As she passes the street light, she notices that her shadow becomes longer. Does the top of her shadow move faster, slower or the same when the shadow is longer as when it is shorter? Show Answer Hide Answer

Riddle: What is 1/2 of 1/4 of 2/9 of 3/7 of 84? Show Answer Hide Answer