Measuring Puzzles

How can I cut the board into only two pieces so that they will fill inside the hole exactly? Try Puzzle ⇒

The cold faucet in my bath lets the water in at the rate of 15 litres per minute. The hot faucet... 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 rod 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 in the... 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 a little... Try Puzzle ⇒

Joey leaves his house in the morning to go to day camp. Just as he is leaving his house he... Try Puzzle ⇒

In front of you are several long fuses. You know they burn for exactly one hour after you light... Try Puzzle ⇒

You have two straight lengths of wood. How can you cut one of them so that one of the three... 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? Author: Peter Grabarchuk... Try Puzzle ⇒

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, and is... 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 number... 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. It... 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 they call... 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 3-liter bowls Try Puzzle ⇒

You have three bowls: 7, 4 and 3 liters in capacity. Only the 7-liter is full. Pour the fewest... Try Puzzle ⇒

You are camping, and have an 8-liter bowl which is full of fresh water. You need to share this... 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 buckets: one... Try Puzzle ⇒

Imagine having three bowls, with the following capacities: In bowl A (8 liters capacity) are... Try Puzzle ⇒

In front of you is a balance. Can you devise a system, using only 4 weights, that can measure... 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 eight real... 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 around... Try Puzzle ⇒

A pool has four faucets. The first faucet takes two days to fill the pool, the second faucet... Try Puzzle ⇒

You need to fly once around the world. You have 3 seaplanes and lots of fuel, but a full tank... Try Puzzle ⇒

We have two red, two green and two yellow balls. For each color, one ball is heavy and the... Try Puzzle ⇒

Four people start at the corners of a square room, 10 meters on each side. Each person moves... Try Puzzle ⇒

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

Here are 10 coins arranged in three lines of four coins: Your task is to re-arrange the same... 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 one... Try Puzzle ⇒

Three out of six look-alike balls are heavy. The other three are light. How many weighings... 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 slice... Try Puzzle ⇒

There's a toy boat floating in a pool. Place a lead ball in the boat (without sinking it),... 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 of forgeries,... 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 only true... 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 ⇒