Stake attention in this memory
The image shows a page from a book displaying mathematical problems and solutions related to sets and Venn diagrams. The top of the page has the heading "Solution;" with sub-points "i. The diagram;" and "(a)". Below this, a Venn diagram is presented with three overlapping circles labeled "H", "I", and "Y". Numbers are placed within the different regions of the Venn diagram: 100, 15, 90, 20, 35, 10, 80, and another 15. Further down the page, there are bullet points labeled "ii.", "iii.", and "iv." detailing calculations. Point "ii." states "Number of students in the group" and shows the calculation: 100 + 15 + 35 + 20 + 90 + 10 + 80 + 15 = 365. Point "iii." states "Number of students that speaks exactly two languages" and shows the calculation: 20 + 15 + 10 = 45. Point "iv." states "Number of students that speak exactly one language" and shows the calculation: 100 + 90 + 80 = 270. Following these points, there is a section labeled "6.5 The Algebra of Sets:" followed by a description of the union and intersection of sets. The text ends with "If A, B and C are any sets (or subsets of the universal set say E). Then". On the left side of the page, there are some handwritten labels starting with "Let", followed by "n(", "n(", "n(", "n(", "n(", and "=". Below this, there is a single letter "b". The image is a photograph of an open book, likely a textbook, displaying mathematical content. The scene depicts educational material, specifically problem-solving in set theory using a Venn diagram. There are no indications of a city, location, or specific environment beyond the context of a book.
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