Measuring Puzzles

How can I cut the board into only two pieces so that they will fill inside the hole exactly?
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The cold faucet in my bath lets the water in at the rate of 15 litres per minute.
The... Try Puzzle >>

The circumference of the Earth is approximately 40,000 kilometers, and someone has just made... Try Puzzle >>

A magic rectangular belt always shrinks its length to 1/2 and width to 1/3 whenever its owner... Try Puzzle >>

A 1-metre stick is broken into two pieces at random. What is the length of the shorter piece,... Try Puzzle >>

A car has to carry an important person across the desert.

There is no petrol station... Try Puzzle >>

Here we see several bits of chain. I have been told to join up all the pieces to make a complete... Try Puzzle >>

At midday the hour and minute hands of a clock sit on top of each other perfectly.

In... Try Puzzle >>

Joey leaves his house in the morning to go to day camp.

Just as he is leaving his... Try Puzzle >>

In front of you are several long fuses.

You know they burn for exactly one hour after... Try Puzzle >>

You have two straight lengths of wood.

How can you cut one of them so that one of... Try Puzzle >>

We know very little about the life of the mathematician Diophantus (often known as the 'father... Try Puzzle >>

Which is bigger: the total area of orange or the total area of red?





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You have to do an experiment to determine the highest floor on a 100-floor building from which... Try Puzzle >>

A girl, a boy, and a dog are walking down a road together.

The boy walks at 5 km/h,... Try Puzzle >>

Gurmit Burmit is a hermit - he lives all on his own on a lonely desert island. There is sand... Try Puzzle >>

The founders of Hairytown decreed years ago that:

1. No two people can have the same... Try Puzzle >>

You need to boil eggs for exactly 9 minutes, or else the visiting Duchess will complain, and... Try Puzzle >>

An eccentric professor used a unique way to measure time for a test lasting 15 minutes.

He... Try Puzzle >>

I have two glasses the same size. One contains 100 ml of lemonade and the other contains 100... Try Puzzle >>

Long-haired Mary Jones works for the Milk Marketing Board.

Hairy Mary At The Dairy... Try Puzzle >>

If I drive half-way to the city at 30 km/hour, how fast do I have to go for the rest of the... Try Puzzle >>

Measure exactly 2 liters of water if you have:

1) 4 and 5-liter bowls
2) 4 and... Try Puzzle >>

You have three bowls: 7, 4 and 3 liters in capacity.

Only the 7-liter is full.

Pour... Try Puzzle >>

You are camping, and have an 8-liter bowl which is full of fresh water.

You need to... Try Puzzle >>

You are doing some gardening, and need exactly 4 liters of water to mix up some special formula... Try Puzzle >>

You are going to mix up some concrete, and in order to get it just right you need exactly 6... Try Puzzle >>

Jack and Jill did not have much success when they went up the hill to fetch a pail of water... Try Puzzle >>

You have a full bucket containing 24 liters of liquid.

You also have three empty... Try Puzzle >>

Imagine having three bowls, with the following capacities:

In bowl A (8 liters capacity)... Try Puzzle >>

In front of you is a balance.

Can you devise a system, using only 4 weights, that... Try Puzzle >>

If it were two hours later, it would be half as long until midnight as it would be if it were... Try Puzzle >>

Someone has mixed up the apples. Read carefully what has happened. Can you find a way to help... Try Puzzle >>

You have nine pearls.

Eight of them are real pearls, and one of them is a fake.

The... Try Puzzle >>

You have a balance and the following items of which you know the weights: a small coin weighing... Try Puzzle >>

You have a balance scale with four weights. With these four weights you must balance any whole... Try Puzzle >>

You intend to fly non-stop around the world.

But a full tank only takes you halfway... Try Puzzle >>

A pool has four faucets.

The first faucet takes two days to fill the pool, the second... Try Puzzle >>

You need to fly once around the world.

You have 3 seaplanes and lots of fuel, but... Try Puzzle >>

We have two red, two green and two yellow balls.

For each color, one ball is heavy... Try Puzzle >>

Four people start at the corners of a square room, 10 meters on each side.

Each person... Try Puzzle >>

Hungry Horace woke up one morning to find that his only clock had stopped working because the... Try Puzzle >>

Below are 10 coins arranged in three lines of four coins:



Your task is... Try Puzzle >>

Hungry Horace likes to keep a note of all the recipes he enjoys. Every year he selects his... Try Puzzle >>

Sugary Sue runs a small shop which sells sweets which run in price from 1p to 1 Pound with... Try Puzzle >>

Two trains are 200 km apart, heading towards each other, going at 50 km/hour each.

From... Try Puzzle >>

Three out of six look-alike balls are heavy. The other three are light.

How many... Try Puzzle >>

There are three different color cylindrical vessels: Blue, Red, and Green, with the sizes as... Try Puzzle >>

I don't have a toaster, but my pan can hold three slices of bread when I make toast.

Each... Try Puzzle >>

There's a toy boat floating in a pool.

Place a lead ball in the boat (without... Try Puzzle >>

Using a balance-type scale with weighing pans, you need to be able to measure all weights from... Try Puzzle >>

You have 10 bags full of coins, in each bag are 1,000 coins.

But one bag is full... Try Puzzle >>

You have 9 balls, equally big, equally heavy - except for one, which is a little heavier.

How... Try Puzzle >>

You have eight bags, each of them containing 48 coins.

Five of these bags contain... Try Puzzle >>

Real jelly babies have a mass of 10 grams, while imitation jelly babies have a mass of 9 grams.... Try Puzzle >>

One of twelve pool balls is a bit lighter or heavier (you do not know) than the others.

At... Try Puzzle >>