MHB How to read this expression "A graph G = (V ,E)"

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The expression "A graph G = (V, E)" denotes a graph G that consists of a vertex set V and an edge set E. This notation is standard in graph theory, clearly defining the components of the graph. The discussion references the Glossary of graph theory on Wikipedia for further clarification. Understanding this notation is essential for studying graph structures and their properties. Accurate interpretation of such expressions is crucial in mathematical and computational contexts.
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How to read this expression "A graph G = (V ,E)"
 
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Thread 'Two interesting number theory tricks'

First trick I learned this one a long time ago and have used it to entertain and amuse young kids. Ask your friend to write down a three-digit number without showing it to you. Then ask him or her to rearrange the digits to form a new three-digit number. After that, write whichever is the larger number above the other number, and then subtract the smaller from the larger, making sure that you don't see any of the numbers. Then ask the young "victim" to tell you any two of the digits of the...
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