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No notes for slide. Match your wits with the "human computer". Pozzies to Puzzle You Mathematics is not always hard, mind-boggling stuff, it can also be simple, interesting and delightful.
Many famous mathematicians are known to be devoted to peg-jumping puzzles, and it is perhaps this kind cf play that leads them on to scientific discoveries. The puzzles presented in this book are by none other than the world-renowned mathematical prodigy, Shakuntala Devi. These are meant to develop one's wit and sharpen his intellectual faculties. There is adventure, excitement and delight in them—and also purposefni entertainment.
She calculates faster than the fastest computer, and her feats have flabbergasted those who have witnessed them. She also writes—on subjects as varied as mathematics, crime and homosexuality. White 7. It is only a systematic effort of solving puzzles posed by nature.
Recreational mathematics, in a way, is pure mathe- matics and it is often difficult to distinguish pure mathe- matics from recreational mathematics. However, it may also be considered applied mathematics in the sense it satisfies the human need for intellectual play.
And solving wits and puzzles, in a way, helps to develop wit and ingenuity. The pedagogic value of recreational mathematics is now widely recognised and creative mathematicians are never embarrassed to show their interest in recreational topics. Today one finds an increasing emphasis on it in journa's published for mathematical instructors and in modern text books. It is said that the famous mathematician Leibniz devoted considerable time to the study of peg-jumping puzzles.
And it is also a well known fact that Prof. Albert Einstein's bookshelf was stacked with books on mathematical games and puzzles. It is creative thoughts bestowed on such mathematical play, that has led many a great mind to scientific discoveries. While solving of the mathematical puzzles and riddles may provide pleasant relaxation to some, undoubtedly these items have a way of hooking the students' interest as little else can. So;ne of the puzzles I am posing in the following 7 9.
Many who, consider the subject dull and boring will see that some facts of mathematics can be quite simple, in- teresting and even beautiful. These are not riddles made to deceive, or nonsensical puzzles which are made to tease the mind without purpose.
The puzzles included in this book are straightforward exercises in reason and statement of facts from which a person with reasonably agile mind can proceed to a logical conclusion. I have no doubt my readers will find adventure, ex- citement, and delight in cracking the clean, sharply defined, and mysterious order that underly the puzzles, and experience enormous intellectual entertainment.
J uzzlcs Can you tell how tall is each brother? Each boy in this family has as many suters as brothers but each of the girls has twice as many brothers as sisters. How many brothers and sisters are there? They start to- gether, run at the same speed and are on different tracks. Which train will wear out its wheel treads first? So I could do 40 miles an hour. While returning, however, I got caught in the traffic rush and I could only manage to drive at a speed of 25 miles an hour.
What was my average speed for the round trip? The cost price of the bicycle was Rs. So my friend was happy that he had made a profit of Rs.
However, at the time of settling the bill, the tourist offered to pay in travellers cheques as he had no cash money with him. My friend hesitated. He had no arrangements with the banks to encash travellers cheques. But he remembered that the shopkeeper next door had such a provision, and so he took the cheques to his friend next door and got cash from him.
On encashing them my friend paid back the tourist the balance of Rs. The tourist happily climbed the bicycle and pedalled away whistling a tune. However, the next morning my friend's neighbour, who had taken the travellers cheques to the bank, called on him and returning the cheques which had proved value- less demanded the refund of his money.
My friend quietly refunded the money to his neighbour and tried to trace the tourist who had given him the bad cheques and taken away his bicycle. But the tourist could not be found. How much did my friend lose altogether in this un- fortunate transaction?
When I reported the matter to the bus company I was asked the number of the bus. Though I did not remember the exact number I did remember that the bus number bad a certain peculiarity about it.
The number plate showed the bus number as a perfect square and also if the plate was turned upside down.? I came to know from the bus company they had only five hundred buses numbered from 1 to S From this I was able to deduce the bus number. Can you tell what was the other number? However there are certain occasions when the hands are exactly opposite each other. Can you give a simple formula for calculating the times of these occasions?
A man was being accused of having stolen certain valuable jewels and trying to run away with them, when he was caught by a smart police officer who overtook him. In cross examination the lawyer for accused asked the police officer how he could catch up with the accused who was already seven steps ahead of him, when he started to run after him.
So the number of steps 1 required were fewer than his. IS One day while on her rounds she sold i an orange more than half her oranges to the first customer. To the second customer she sold i an orange more than half of the remainder and to the third and the last customer she sold i an orange more than half she now had, leaving her none. Can you tell the number of oranges she originally had?
Oh, by the way, she never had to cut an orange.
Best Quantitative and reasoning Aptitude books for competitive exams and placements
Here is the list of few puzzles you can refer. You are given two candles of equal size, which can burn 1 hour each. You have to measure 90 minutes with these candles. There is no scale or clock. Also u r given a lighter. Ans: 1.
Puzzles to Puzzle You
Infosys Shakuntala Devi Interview Puzzles With Answers