What has no start, end, or centre?
Look at this sequence from top to bottom. What is the next number in the sequence? 1 11 21 1211 111221 312211
I am white when I am dirty, and black when I am clean. What am I?
You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.
Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship? ? : 3839 :: 11 : 1209
Which English verb becomes past tense just by rearranging the letters?
I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?
A father's child, a mother's child, yet no one's son. Who am I?
A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated. The results are as follows John beats Jacob Minda beats Toni Toni beats John Who came first in the race?
Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol? 19834 -----: 187 15921 -----: 153 17561 -----: 139 13734 -----: ???
I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki
