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# Professor's Cube

The Professor's Cube is a combination puzzle, a 5×5×5 version of the Rubik's Cube. [1]

## Australia

Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands.

## Barnes & Noble

Barnes & Noble, Inc., a Fortune 500 company, is the bookseller with the largest number of retail outlets in the United States, and a retailer of content, digital media, and educational products.

## China

China, officially the People's Republic of China (PRC), is a unitary one-party sovereign state in East Asia and the world's most populous country, with a population of around /1e9 round 3 billion.

## Combination puzzle

A combination puzzle, also known as a sequential move puzzle, is a puzzle which consists of a set of pieces which can be manipulated into different combinations by a group of operations.

## David Singmaster

David Breyer Singmaster (born 1939, USA) is a retired professor of mathematics at London South Bank University, England, UK.

## Factorial

In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example, The value of 0! is 1, according to the convention for an empty product.

## Feliks Zemdegs

Feliks A. Zemdegs (Fēlikss Zemdegs; born 20 December 1995) is an Australian Rubik's Cube speedsolver.

## Kevin Hays (speedsolver)

Kevin Hays (born 12 May 1994) is an American Rubik's Cube speedsolver.

## Max Park

Max Park is an American Rubik's cube speedsolver who formerly held the world record for average of five 3x3x3 solves (excluding fastest and slowest), 6.39 seconds, set on 23 April 2017 at OCSEF Open 2017.

## Names of large numbers

This article lists and discusses the usage and derivation of names of large numbers, together with their possible extensions.

## Permutation

In mathematics, the notion of permutation relates to the act of arranging all the members of a set into some sequence or order, or if the set is already ordered, rearranging (reordering) its elements, a process called permuting.

## Pocket Cube

The Pocket Cube (also known as the Mini Cube) is the 2×2×2 equivalent of a Rubik's Cube.

## Rubik's Cube

Rubik's Cube is a 3-D combination puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik.

## Rubik's Revenge

The Rubik's Revenge (also known as the Master Cube) is a 4×4×4 version of Rubik's Cube.

## Speedcubing

Speedcubing (also known as speedsolving) is the sport involving solving a variety of twisty puzzles, the most famous being the Rubik's Cube, as quickly as possible.

## United States

The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

## V-Cube 6

The V-Cube 6 is a 6×6×6 version of Rubik's Cube.

## V-Cube 7

The V-Cube 7 is a combination puzzle in the form of a 7×7×7 cube.

## V-Cube 8

The V-Cube 8 is an 8×8×8 version of Rubik's Cube.

## References

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