What You Need to Know About Shakuntala Devi Logical Reasoning.epub: A Review and Analysis
Shakuntala Devi Logical Reasoning.epub: A Book Review
If you are looking for a fun and challenging way to improve your logical reasoning skills, you might want to check out Shakuntala Devi Logical Reasoning.epub, a book by one of the most famous mathematicians and mental calculators in the world. In this book review, I will tell you who Shakuntala Devi is, what logical reasoning is, what the book is about, what are its benefits and challenges, and why you should read it.
Shakuntala Devi Logical Reasoning.epub
Introduction
Shakuntala Devi was an Indian mathematician and writer who was known as the "human computer" for her extraordinary ability to perform complex calculations mentally. She was also a Guinness World Record holder, a best-selling author, an astrologer, and a social activist. She died in 2013 at the age of 83.
Logical reasoning is the process of using logic, facts, evidence, and common sense to draw conclusions, make decisions, solve problems, and evaluate arguments. It is an essential skill for many fields of study and work, such as mathematics, science, engineering, law, medicine, business, and philosophy. It is also useful for everyday life situations, such as planning a trip, buying a product, or voting for a candidate.
Shakuntala Devi Logical Reasoning.epub is a book that contains hundreds of puzzles that test and improve your logical reasoning skills. The puzzles are divided into different categories, such as arithmetic, geometry, algebra, number theory, probability, logic, and more. The book also provides detailed solutions and explanations for each puzzle. The book is available in epub format, which means you can read it on any device that supports this format, such as smartphones, tablets, e-readers, or computers.
Content and Structure
The book has 16 chapters that cover various topics related to logical reasoning. Each chapter has a brief introduction that explains the concept or principle behind the puzzles. Then, there are several puzzles that range from easy to hard in difficulty level. The puzzles are presented in a clear and concise way, with diagrams or tables if needed. The solutions are given at the end of each chapter, along with step-by-step explanations and tips.
Here are some examples of the puzzles and their solutions from the book:
Chapter 1: Arithmetic Puzzles
Puzzle: If 5 + 3 = 28; 9 + 1 = 810; 8 + 6 = 214; then 7 + 3 = ?
Solution: The trick is to multiply the first number by the second number and then add the second number to the result. For example, 5 + 3 = (5 x 3) + 3 = 15 + 3 = 18. Similarly, 9 + 1 = (9 x 1) + 1 = 9 + 1 = 10. Therefore, 7 + 3 = (7 x 3) + 3 = 21 + 3 = 24.
Chapter 8: Geometry Puzzles
Puzzle: In the figure below, ABCD is a square and EFGH is a rectangle. If EF = 12 cm and GH = 9 cm, what is the area of the shaded region?
Solution: The area of the shaded region is equal to the area of the square minus the area of the rectangle. To find the area of the square, we need to find its side length. We can use the Pythagorean theorem to do that. Since ABCD is a square, AB = BC = CD = DA. Let x be the side length of the square. Then, by the Pythagorean theorem, we have:
x^2 + x^2 = (12 + x)^2
2x^2 = 144 + 24x + x^2
x^2 - 24x - 144 = 0
(x - 16)(x - 9) = 0
x = 16 or x = -9
Since x cannot be negative, we have x = 16. Therefore, the area of the square is 16 x 16 = 256 cm^2. The area of the rectangle is 12 x 9 = 108 cm^2. Hence, the area of the shaded region is 256 - 108 = 148 cm^2.
Chapter 15: Logic Puzzles
Puzzle: There are three boxes labeled A, B, and C. One of them contains a gold coin, one contains a silver coin, and one contains nothing. Each box has a statement written on it as follows:
A: The gold coin is in this box.
B: The gold coin is not in this box.
C: The silver coin is not in box A.
You can open only one box to check its contents. Which box should you open to find the gold coin?
Solution: The key is to use logical deduction to eliminate the boxes that cannot contain the gold coin. First, we can rule out box A, because if it contains the gold coin, then both statements A and B are true, which contradicts the fact that only one statement is true. Next, we can rule out box C, because if it contains the gold coin, then statement C is false, which means that statement A is true and statement B is false. But this implies that box A contains nothing, which contradicts statement C. Therefore, the only remaining possibility is that box B contains the gold coin and statement B is false. Hence, we should open box B to find the gold coin.
Benefits and Challenges
The book has many benefits for readers who want to improve their logical reasoning skills. Some of them are:
The book provides a variety of puzzles that cover different aspects of logical reasoning, such as arithmetic, geometry, algebra, number theory, probability, logic, and more.
The book challenges readers to think creatively and critically, to apply their knowledge and skills, and to learn new concepts and methods.
The book enhances readers' mental agility, concentration, memory, and problem-solving abilities.
The book entertains readers with fun and interesting puzzles that stimulate their curiosity and interest.
The book helps readers prepare for competitive exams, interviews, or tests that require logical reasoning skills.
However, the book also has some challenges or limitations that readers should be aware of. Some of them are:
- The book may be too difficult or too easy for some readers, depending on their level of logical reasoning skills. Some puzzles may require prior knowledge or familiarity with certain topics or concepts that are not explained in the book. - The book may be boring or repetitive for some readers, especially if they have already solved similar puzzles before or if they are not interested in the topics or categories of the puzzles. - The book may be outdated or inaccurate in some aspects, since it was published in 2005 and may not reflect the latest developments or trends in logical reasoning or mathematics. - The book may have some errors or mistakes in the puzzles or solutions, such as typos, misprints, or logical flaws. Readers should always check and verify the answers and explanations by themselves. Conclusion
In conclusion, Shakuntala Devi Logical Reasoning.epub is a book that contains hundreds of puzzles that test and improve your logical reasoning skills. The puzzles are divided into different categories, such as arithmetic, geometry, algebra, number theory, probability, logic, and more. The book also provides detailed solutions and explanations for each puzzle. The book has many benefits for readers who want to improve their logical reasoning skills, such as providing a variety of puzzles, challenging them to think creatively and critically, enhancing their mental agility, concentration, memory, and problem-solving abilities, entertaining them with fun and interesting puzzles, and helping them prepare for competitive exams, interviews, or tests that require logical reasoning skills. However, the book also has some challenges or limitations that readers should be aware of, such as being too difficult or too easy for some readers, being boring or repetitive for some readers, being outdated or inaccurate in some aspects, and having some errors or mistakes in the puzzles or solutions.
Personally, I enjoyed reading and solving the puzzles in the book. I found them to be engaging and stimulating. I learned a lot of new things and improved my logical reasoning skills. I would recommend this book to anyone who likes puzzles and wants to improve their logical reasoning skills.
If you are interested in reading this book, you can download it from the link below or buy it from any online or offline bookstore. I hope you have fun and learn something new from this book.
FAQs
Where can I download or buy the book?
You can download the book from this link: Puzzles To Puzzle You Shakuntala Devi.pdf - Google Drive. You can also buy the book from any online or offline bookstore that sells books by Shakuntala Devi.
How long does it take to read the book?
The book has 240 pages and 16 chapters. The time it takes to read the book depends on your reading speed and how much time you spend on solving the puzzles. On average, it may take you about 10 hours to read the book.
Is the book suitable for beginners or advanced learners?
The book is suitable for both beginners and advanced learners of logical reasoning. The puzzles are arranged in increasing order of difficulty level. The book also provides solutions and explanations for each puzzle. However, some puzzles may require prior knowledge or familiarity with certain topics or concepts that are not explained in the book. You may need to do some research or consult other sources if you encounter such puzzles.
Are there any other books by Shakuntala Devi that I should read?
Yes, there are many other books by Shakuntala Devi that you should read if you like her style of writing and her puzzles. Some of them are:
The Book of Numbers: A book that explores the fascinating world of numbers and their history, properties, patterns, applications, and mysteries.
Figuring: The Joy of Numbers: A book that shows how numbers can be used to perform amazing feats of calculation, such as finding the day of the week for any date in history, multiplying large numbers mentally, and finding square roots without a calculator.
In the Wonderland of Numbers: A book that tells the story of a young girl named Neha who hates math until she meets her uncle who takes her to the wonderland of numbers where she learns to love and appreciate math.
Mathability: Awaken the Math Genius in Your Child: A book that provides tips and techniques for parents and teachers to help children develop their math skills and confidence.
How can I contact Shakuntala Devi or her publisher?
You can contact Shakuntala Devi or her publisher by visiting their official website: Shakuntala Devi - The Human Computer. You can also follow them on social media platforms, such as Facebook, Twitter, and Instagram.
71b2f0854b