# Questions tagged [arithmetic]

For puzzles involving addition, subtraction, multiplication, or division.

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40 views

### One Step Forward, Two Steps Back

What is the next number in this never-ending sequence? 0 1 1 110 111 101 11000 11101 10101 1100110 1001011 ...
268 views

### Happy birthday Ramanujan!

On December 22 2019, Ramanujan would have been 132 years old. In his memory here are two puzzles around 132. In the six vertices of each of these graphs place six positive integers that add up to ...
115 views

### The Three-Legged Race

At a festival, you and your friends (Jacky, Chris, Martha) are competing in a Three-Legged Race. The race starts with 2 people at a time with ankles tied together navigating a track. At the end of the ...
80 views

### Folding Shirts - Folding Speeds [closed]

Steve and Melanie have jobs folding shirts at a store. Every day, they each have 100 shirts to fold. When they finish folding, they can leave. On the first day of the job, Melanie finishes folding in ...
79 views

### Making Muffins - Amount to the Batter

You’re making muffins and need to add 1/3 (one third) of a cup of sugar to the batter. You check the cupboards and find that you only have the following measuring cups: a 2/3 (two thirds) cup, and a 1/...
96 views

### Highest scoring words based on distance travelled along the alphabet v2

This is a follow on from my previous word puzzle: Highest scoring words based on distance travelled along the alphabet The twist in this puzzle which opens it up a lot more is that the alphabet can ...
458 views

### Highest scoring words based on distance travelled along the alphabet

For any word we define it's alphabetic distance to be the total amount of places in the alphabet you need to traverse between each letter. Example: WORD has a score of 25 8 character distance ...
5k views

### A New Math Operation?

Your quirky Math teacher comes with a new Math operation called "@" and wants to see if you can figure out what it does. She writes the following examples on the blackboard: 8@5 = 31340 9@3 =...
155 views

### Free Assignment: Longest Word Worth a Million

This is very much inspired by this question. Take the first 26 primes and relate each one to a letter of the alphabet. On this occasion, you may choose how each number is mapped to each letter (...
351 views

$(A)72$ $(B)18$ $(C)9$ $(D)19$ Source:My coaching DPP The question asks you identify the pattern and find the missing character. I have been trying to solve this problem from a long time but I ...
3k views

### Longest word worth at most a million

An old and popular puzzle, recently revived on Twitter by Alex Bellos, Chris Smith, and others, asks to take the first 26 primes, relate each to letters of the alphabet (A = 2, B = 3, C = 5, ..., Y = ...
200 views

### How do I solve this problem?

I am trying to answer this puzzle - which of the five potential answers is correct, and why? This test comes from Metropol iq1 book
114 views

861 views

### Divisible Dates

The day of the month, and the month of the year, often simultaneously divide the year. Most recently it happened on January 3, 2019 because both 1 (January) and 3 divide 2019. In our era, since 1/1/...
240 views

### A Tetrad Puzzle: Find The Key

I made this to test some ideas for a game I'm developing. Feedback would be appreciated. What is the key?