There are 9 balls that are identical. Only one ball is heavier than the rest. You also have a two-armed scale with which to measure the weight of the balls. How can you find the heavier ball by using the scale only twice?
Riddle AnswerMath Riddles
Bottle and Cork
A bottle and a cork together cost $1.10. The bottle costs $1.00 more than the cork. How much does the cork cost?
Riddle AnswerTwo Men Two Fishes
Two men catch two fishes in 2 minutes. At this rate, how many men are needed to catch 500 fishes in 500 minutes?
Riddle AnswerTotal Having the Same Digits
Can you find a number which added to itself one or several times will give a total having the same digits as that number but differently arranged and after the sixth addition will give a total of all nines?
Riddle AnswerThe Missing Dollar
Three men go to stay at a hotel and they are charged $30 for the room.
They split the cost with ten dollars each.
Later the manager finds out that the rate is $25 and gives the bellboy $5 to return to the guests. On the way to the room the bellboy reasons that $5 would be difficult to split among three people so he pockets $2 and gives $1 to each person.
Now each person paid $10 and got back $1. So they paid $9 each, totalling $27. The bellboy has another $2, adding up to $29. Where is the missing dollar?
Riddle Answer