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Description
Combinatorics: A Very Short IntroductionHow many possible sudoku puzzles are there? In the lottery, what is the chance that two winning balls have consecutive numbers? Who invented Pascal's triangle? (it was not Pascal) Combinatorics, the branch of mathematics concerned with selecting, arranging, and listing or counting collections of objects, works to answer all these questions. Dating back some 3000 years, and initially consisting mainly of the study of permutations and combinations, its
How many possible sudoku puzzles are there? In the lottery, what is the chance that two winning balls have consecutive numbers? Who invented Pascal's triangle? (it was not Pascal) Combinatorics, the branch of mathematics concerned with selecting, arranging, and listing or counting collections of objects, works to answer all these questions. Dating back some 3000 years, and initially consisting mainly of the study of permutations and combinations, its scope has broadened to include topics such as graph theory, partitions of numbers, block designs, design of codes, and latin squares. In this Very Short Introduction Robin Wilson gives an overview of the field and its applications in mathematics and computer theory, considering problems from the shortest routes covering certain stops to the minimum number of colours needed to colour a map with different colours for neighbouring countries.ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.
Binding Type: Paperback
Publisher: Oxford University Press, USA
Published: 07/01/2016
ISBN: 9780198723493
Pages: 144
Weight: 0.30lbs
Size: 6.80h x 4.20w x 0.50d
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4.1 ★★★★★
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Product Reviews
★★★★★ 5
Rose gold heart earrings.
Style: 16mm Rose Gold
For my daughter and she loves them. They go with all her jewelry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 6, 2025
★★★★★ 4
You can wear them in the water because they are 14 k gold
Love these earrings. They were a little smaller than I thought and the clasp gets wonky after a while.
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Reviewed in the United States on August 27, 2025
★★★★★ 5
These have been a conversational piece
Style: 16mm Rose Gold
I thought these were cute. I purchased two sets because I have two holes. They seem like a good quality of rose gold. They are not to big but the heart just hugs my ears.
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Reviewed in the United States on December 11, 2023
★★★★★ 3
Deceiving measurements
The earrings are pretty. However, the description shows 2 mm thickness and mine are 1mm (barely). The picture also shows measurements from 16-20 mm which is hard to judge. Mine are 16mm (that’s okay).
Lastly but not least, I found the exact same earrings for half the price so now I feel like I over paid for these ones.
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Reviewed in the United States on November 27, 2023
★★★★★ 1
Highly deceptive on size, and the packaging is trashy!
Style: 20mm Yellow Gold
A coworker and I purchased these earrings as a gift for another coworker. They arrived today thrown in a plastic bag, with a cheap box that says "LooptyHoops" along with fliers about their other jewelry! The earrings are not ANYWHERE near the size we ordered! I am questioning the legitimacy of this company, and if their earrings are 14K gold!
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Reviewed in the United States on May 5, 2023