Problem of the Week

A riddle problem is a question or statement intentionally phrased so as to require ingenuity in ascertaining its answer or meaning, typically presented as a game. Below is a list of the past problem of the week riddles in descending chronological order.

A Hundred Stones

POW: 10-13-2025

A hundred stones are placed, in a straight line, a yard distant from each other. How many yards must a person walk, who undertakes to pick them up, and place them in a basket stationed one yard from the first stone?

Answer: In solving this question it is clear that to pick up the first stone and put it into the basket, the person must walk two yards, one in going for the stone and another in returning with it; that for the second stone he must walk four yards, and so on increasing by two as far as the hundredth, when he must walk two hundred yards, so that the sum total will be the product of 202 multiplied by 50, or 10,100 yards. If any one does not see why we multiply 202 by 50 in getting the answer, we refer him to his arithmetic.

What Weighs More A Pound Of Feathers Or A Pound Of Stones?

POW: 10-06-2025

What weighs more, a pound of feathers or a pound of stones?

Answer: The same. They both weigh a pound!

There Are 2 Ducks In Front Of 2 Other Ducks

POW: 09-29-2025

There are 2 ducks in front of 2 other ducks. There are 2 ducks behind 2 other ducks. There are 2 ducks beside 2 other ducks. How many ducks are there?

Answer: Just four, in a square formation.

What Arithmetic Symbol Can Be Put Between 2 And 3 So That

POW: 09-22-2025

What arithmetic symbol can be put between 2 and 3 so that the resulting number is greater than 2 but less than 3?

Answer: A decimal point. 2.3 is greater than 2 and less than 3.

Four Digit Number

POW: 09-15-2025

Find the four digit number in which the first digit is one fourth of the last digit, the second digit is 6 times the first digit, and the third digit is the second digit plus 3. What is it?

Answer: 1694.

The Ages Of A Father And Son Add Up To 66

POW: 09-08-2025

The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be? (3 possible solutions).

Answer: 51 and 15. 42 and 24. 60 and 06.

What's The Next Number?

POW: 09-01-2025

What is the next number in the sequence? 2, 3, 5, 9, 17, _

Answer: 33. The pattern: Double the previous number and subtract 1.

What Two Whole, Positive Numbers Have A One-digit Answer When Multiplied

POW: 08-25-2025

What two whole, positive numbers have a one-digit answer when multiplied and a two-digit answer when added?

Answer: 1 and 9.

The Stopped Clock

POW: 08-18-2025

My only timepiece is a wall clock. One day I forgot to wind it and it stopped. I went to visit a friend whos watch is always correct, stayed awhile, and then went home. There I made a simple calculation and set the clock right. How did I do this even though I had no watch on me to tell how long it took me to return from my friend's house?

Answer: Before I left, I wound the wall clock. When I returned, the change in time equaled how long it took to go to my friends house and return, plus the time I spent there. But I knew the latter because I looked at my friends watch when I arrived and left. Subtracting the time of the visit from the time I was absent from my house, and dividing by 2, I obtained the time it took me to return home. I added this time to what my friend watch showed when I left, and set the sum on my wall clock.

There Is A Clothing Store In Bartlesville. The Owner Has Devised His Own Method

POW: 08-11-2025

There is a clothing store in Bartlesville. The owner has devised his own method of pricing items. A vest costs $20, socks cost $25, a tie costs $15 and a blouse costs $30. Using the method, how much would a pair of underwear cost?

Answer: $45. The pricing method consists of charging $5 for each letter required to spell the item.

A Hundred Stones

What Weighs More A Pound Of Feathers Or A Pound Of Stones?

There Are 2 Ducks In Front Of 2 Other Ducks

What Arithmetic Symbol Can Be Put Between 2 And 3 So That

Four Digit Number

The Ages Of A Father And Son Add Up To 66

What's The Next Number?

What Two Whole, Positive Numbers Have A One-digit Answer When Multiplied

The Stopped Clock

There Is A Clothing Store In Bartlesville. The Owner Has Devised His Own Method

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