I Never Return

What are these three related items? When I am placed somewhere I will never stand up. Whatever you give me I will eat. When I go I never return.

A stove, fire, smoke.

Essentially a duplicate of A Group of Three but I’m keeping it here to avoid broken links.

Posted in Riddles

Gain and Lose the Most

Some are quick to take it.
Others must be coaxed.
Those who choose to take it
gain and lose the most.

Risk.

By Sef Daystrom

Posted in Riddles

Add Two To Eleven To Get One

When can you add two to eleven and get one as the correct answer?

When you add two hours to eleven o’clock to get one o’clock.

Posted in Riddles

An Abandoned Aquarium

There is an abandoned aquarium in an empty house. The aquarium has three large fish and three small fish. But after a week, one large fish and two small fish die.

How many remain in the aquarium?

Six, since no one is there to remove the 3 dead fish.

Posted in Brain Teasers

A Corny Question

A merchant has 21 sacks of grain: 7 full, 7 half-full and 7 empty. He wants to divide them equally among his three sons. How can he do this, without transferring any grain between sacks, so each son has the same quantity of grain and number of sacks?

We know each son must end up with 7 sacks and 3.5 sacks of grain, since (7 sacks + 7 half sacks) / 3 = 3.5 sacks each.
There are two solutions.

Solution 1
Son 1: 3 full, 1 half-full and 3 empty.
Son 2: 3 full, 1 half-full and 3 empty.
Son 3: 1 full, 5 half-full and 1 empty.

Solution 2
Son 1: 2 full, 3 half-full and 2 empty.
Son 2: 2 full, 3 half-full and 2 empty.
Son 3: 3 full, 1 half-full and 3 empty.

Posted in Brain Teasers

Four Colored Balls in Gym Class

Four different-colored balls are being used in a gym class activity – blue, red, yellow and orange. Each student must hold two different-colored balls, but no two students can have the same two colors (for example, only one student can hold the blue and red ball).

How many students can play the game?

Six. If you prefer math, you can calculate it as 4 combination 2

4! / (2!)^2
24 / 4 = 6

Or you can work it out manually:

1. Blue Red
2. Blue Yellow
3. Blue Orange
4. Red Yellow
5. Red Orange
6. Yellow Orange

Posted in Brain Teasers

A Word That Has No End

I’m a five-letter word that has no end, Commit a sin? One through three can amend, One, four and five are something alive, Two and three occur near to thee.

What am I?

Abyss. aby is an archaic word meaning to pay the penalty for. An ass, otherwise known as a donkey, is alive and “by” is another way of saying near to you.

Posted in Riddles

Fifty Quarters

You have fifty quarters on the table in front of you. You are blindfolded and cannot discern whether a coin is heads up or tails up by feeling it. You are told that x coins are heads up, where 0 < x < 50. You are asked to separate the coins into two piles in such a way that the number of heads up coins in both piles is the same at the end. You may flip any coin over as many times as you want.

How can you do it?

Take x coins, flip all of them and put them in one pile. The rest of the coins form the second pile.

Posted in Brain Teasers

What Are The Next Three Numbers in the Series?

What are the next three numbers in this series?

4
6
12
18
30
42
60
72
102
108
?
?
?

Each number is surrounded by a prime number.

4 – 3 and 5 are prime
6 – 5 and 7 are prime
etc.

The next three numbers after 108 that have primes before and after them are:

138, 150 and 180.

Posted in Brain Teasers

Found On a Hand And Also a Tree

I’m found on a hand and also a tree,
You’ll find me on Sunday, occasionally,
Records, pictures, islands and brew,
From August to Wolfgang and Sago for you.

What am I?

A Palm.

Posted in Riddles