# Questions tagged [calculation-puzzle]

A puzzle that involves numerical calculations, such as multiplication and addition.

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### Lionel Messi's soccer puzzle

Lionel Messi sentimentally remembers a small soccer tournament in which he participated many years ago. There were four teams in the tournamnent: Atleticolino, Barcelino, Chicorrotico and Diminuto. ...
178 views

### A Chuck-a-luck variant

You're thinking of trying a variant of Chuck-a-luck. In this variant, you choose one number in the range $1$ to $6$ and five dice are rolled. These are the payouts: ...
647 views

### First to Five Points

The Problem: There are two players. Each player writes a number, hidden from the other player. It can be any integer 1 or greater. The players reveal their numbers. Whoever chose the lower number ...
2k views

### A puzzle about baking 88 pies

You surely remember that one of my grandmothers really hates mathematics (How do I convince my grandmother?). Yesterday I visited my other grandmother who really loves mathematics. She was in the ...
3k views

### A new six-sided die

Enrico wants to construct a new six-sided die with the following properties: Each side should show a positive integer Different sides should show different integers If two sides share an edge, then ...
3k views

370 views

### Monkey on a Flagpole [closed]

A 3 feet tall, hungry monkey is trying a reach a magical banana placed on top of a flagpole. The flagpole is 25 feet in height and is slippery to grasp. Every Odd numbered Jump, the monkey climbs 3 ...
169 views

### mensateaser [level 0] (part 1)

What should be the value of the bottom row in our Euro 2012 Football themed grid?
2k views

### Baumic Numbers!

I have a class of numbers; this class of numbers contains a certain number if and only if it is baumic. The following are baumic numbers: 1, 6, 9, 15, 20, 21, 30, 33, 39, 45, 50, 51, 56, 57, 69, 70,...
558 views

### What's Jeremy's Encryption Algorithm?

As a result of their solutions to this puzzle, store owner Jeremy promoted both Cerberus and Quark to top managerial positions. Soon after starting their new roles, they were somewhat surprised when ...
2k views

### A Sand Timer Challenge

Which (if any) of these intervals is it possible to measure given two sand timers (which change from question to question)? There are no minute marks, halfway points, etc. A. 7 minutes with 4- and 5-...
2k views

### What is a Surpassing Phrase™?

If a phrase conforms to a certain rule, I call it a Surpassing Phrase™. Use the examples below to find the rule. Some details to save you time: 1. Font doesn't matter. 2. The number of words ...
134 views

### Minimum number of telephone calls needed to exchange information [duplicate]

There are 16 secret agents who each know a different piece of secret information. They can telephone each other and exchange all the information they know. After the telephone call, they both know ...
1k views

### Cryptic Woman and a Confused Census-Taker [duplicate]

I recently found a card on which there were two puzzles, both of which have me stumped; I want to spend a little more time on the other puzzle, but here is one that stumps me: no 65 A census-...
350 views

### Race of the century

Four drivers face off in the race of the century. The path of the race follows this layout: 100 KM road with a sharp turn every 5 KM 50 KM straight road 50 KM straight river 40 KM upstream river 40 ...
11k views

### Can you solve this math problem

If these are true : 5 + 3 = 158 9 + 1 = 910 8 + 6 = 4814 4 + 4 = 168 then 7 + 3 = ??
652 views

### A tour of 36 cities

Each of 4 people is touring 36 cities separately. Each of the 36 squares in the illustration below represents a city. To make the answers shorter, each city has been given a 1-character name, from A-Z,...
2k views

### A Threes Of Cake

This question is similar to my other question Twos For Thought, which arguably was a better pun but I decided to recreate the question, except with threes! How many threes do you need to get to the ...
212 views

### Using numbers form a number

Using 7,8,9 and basic mathematical operations form the number 327600. Use every digit exactly once. Note: Allowed Operations: $+,-,/,*, {}^{\displaystyle\large\hat{}} ,!,\sqrt{}$
575 views

### Twos For Thought

How many twos do you need to get to the number $100$ exactly? Example: $22+22+22+22+2^2+2^2+2^2$ This example method uses 14 twos and is obviously not ideal. Can you find a way that uses the least ...
469 views

### The problem of the hired hands' work rates [closed]

A farmer is looking to hire some hired hands. His usual three hires are named Barry, Harry, and Larry. He knows from hiring them before that: Working together, Barry and Harry can plow an acre in ...
481 views

### What happened to the missing £10? [duplicate]

I have come across a puzzle, which makes no sense. Does anyone know the answer to the below? You and two friends go on holiday. When checking out, the total bill comes to £300. You pay the bill ...
693 views

### Decrypt this Cryptogram: cs.aoa.daso

The encrypted text is: (. is a letter separator and <br> or line break is a word separator) cs.aoa.dasocs.fsi.rxhgs.al....
1k views