What is the value of 2581?
8809 = 6 5555 = 0 7111 = 0 8193 = 3 2172 = 0 8096 = 5 6666 = 4 1012 = 1 1111 = 0 7777 = 0 3213 = 0 9999 = 4 7662 = 2 7756 = 1 9313 = 1 6855 = 3 0000 = 4 9881 = 5 2222 = 0 5531 = 0 3333 = 0 2581 = ?Riddle Answer
Logic Riddles
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Old Fashioned Bike Wheel
An old fashioned bike wheel has 21 spokes. How many spaces are between the spokes – 20, 21, or 22?
Riddle AnswerBlind Bartender’s Problem
Four glasses are placed on the corners of a square Lazy Susan (turntable). Some of the glasses are upright (up) and some upside-down (down).
A blindfolded person is seated next to the Lazy Susan and is required to re-arrange the glasses so that they are all up or all down, either arrangement being acceptable.
The glasses may be re-arranged in turns subject to the following rules.
- Any two glasses may be inspected in one turn and after feeling their orientation the person may reverse the orientation of either, neither or both glasses.
- After each turn the Lazy Susan is rotated through a random angle.
- At any point of time if all four glasses are of the same orientation, a bell will ring.
Can you devise an algorithm which allows the blindfolded person to ensure that all glasses have the same orientation (either up or down) in a finite number of turns? The algorithm must not depend on luck.
Riddle AnswerThree Boxes
On the table before you are three small boxes, labeled A, B , and C. Inside each box is a colored plastic chip. One chip is red, one is white, and one is blue. You do not know which chip is in which box. Then, you are told that of the next three statements, exactly one is true:
- Box A contains the red chip
- Box B does not contain the red chip
- Box C does not contain the blue chip
Determine the color of the chip in each box.
Riddle Answer