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Puzzles MindBenders 
by Steve Zervos 
These mindbenders will test your logic in different ways.


_______________________ TWO BUCKS AND A FLY: Two bucks, vying for the attention of a young doe standing nearby, lowered their antlers and came hurtling toward each other from a distance apart of 100 meters, each at a speed of 12.5 meters per sec. A superfast, but crazy, deerfly flew in a straight line from the head of one buck to the head of the other, turned and flew back to the first buck. It continued to fly back and forth between the two bucks as the distance between them became dangerously shorter. The fly's speed was 8 meters per sec. How many meters had the fly traveled when the two bucks eventually made contact? 

Contrary to how it may seem, you don't need involved calculus to solve this puzzle. All it requires is a little logic to find the simple solution.
Please note: No creature was harmed in the making of this puzzle. The groggy bucks survived the charge and the crazy fly jumped out of the way just before impact. As for the unimpressed doe, it casually ambled off.

_______________________ SIR PLUTUS CRATT:
Sir Plutus has forgotten that he no longer has anything of value in his wall safe, so he recently had one of those newfangled electronic security locks installed. It has eight ordinary updown toggle switches labeled A to H. The instructions that came with the device were crystal clear. To open it, all Sir Plutus has to do is set each switch either up or down such that,
It may or may not confuse the burglars, but it has certainly confused Sir Plutus. How should the switches be set to open the safe? 
_______________________ WILLIAM AND WENDY: William and his sweetheart Wendy were both paranoid about security. When William wanted to send Wendy (who was living in another town) a memento of sentimental value they devised a way of sending it safely through the mail. William put the memento in a box that had ample room for a strong padlock. He mailed the padlocked box to Wendy, but he retained the key. How did Wendy open the box and retrieve the memento without William's key? She did not have a copy of the key, and she did not pick the lock or damage the box in any way. 
_______________________ CONFUSION CORNERS:
Confusion Corners is one of those new housing estates that have sprung up on the outskirts of town. It has three parallel avenues that run north and south, intersected by three parallel streets that run east and west. So far there are nine families living on the estate, each at a different one of the nine intersections. It's a happy little nook of racial harmony. There are no house numbers yet but if you want to find a particular family just remember that:
The postman has requested a transfer. Do you know at which intersection each family lives? 
_______________________ PENNY'S BIRTHDAY: When teacher asked Penny Bright for her place and date of birth she quickly replied "I was born in London at exactly 25 minutes and 4 seconds before Big Ben struck one on the afternoon of the 7th day of August in the year 1990." The teacher was amazed. "Goodness. How can you remember all that information after all these years". Penny has a method. How does she remember? 
_______________________ EL PONGO: Grandma Gemma was going past the "El Pongo" pet store so she asked her grandchildren if they wanted any pets. Abby said she wanted some kittens and nothing else. Bronnie said she wanted some chickens and nothing else. Charles said he wanted only one pet and he didn't care what it was. Grandma was able to satisfy everyone's order. She brought 9 pets in total, all perfectly healthy specimens with 20 legs between them. Surprisingly, Abby's kittens got on quite well with Bronnie's chickens. How many kittens did Abby get? (Hint. Yes, the puzzle is solvable. Read the clues carefully.) 
_______________________ RELATIVELY SPEAKING: Officer Kurious stopped a motor vehicle for a routine inspection. He asked the female driver who her passengers were. She replied that she and her passengers were all related. Officer Kurious asked "Can you tell me how you are related?". "Certainly" she replied. "There are five of us in the vehicle. We are all one family and we are related in 18 ways. There are no spouses, inlaws or steprelatives on board. There are two fathers, my son and ...". By this time Officer Kurious shook his head, gave a sigh of resignation and walked off to attend to another matter. How were the five people in the vehicle related to each other in 18 ways? 
_______________________ POLES APART: Farmer Newer had two poles erected on his land, one was 74 feet high and the other 100 feet high. He attached a 114 foot length of rope from the top of one pole to the top of the other. The rope sagged so that its lowest point was 30 feet above the ground. What distance apart are the poles? (Hint: This puzzle is not as difficult as it appears.) 
_______________________ MISSING LINK: R T _ U I This is a common sequence which you have probably made use of many times yourself. If you can remember where you have seen it you will have no trouble filling in the missing letter, which is ?. 
_______________________ BYRON THE BOOKWORM:
This puzzle is different to other puzzles about books and pages. I have made it relatively easier than my other puzzles on the same theme yet many readers still find it hard to solve. Byron the bookworm has been traveling through the pages of the "Happy Eater's Digest", volumes I, II and III. The books stand together on a shelf as shown. Each book has 100 pages with every page numbered. There are no numbers on the inside of the covers. Byron enjoys eating out holes in the pages as he travels through the books. He always makes a new hole, never passing through the same hole twice and never eating through the covers, which he finds unpalatable, preferring instead to go around them. Byron began on page 42 of volume I, and so far has eaten holes all the way to page 73 of volume III where he turned and ate his way back to page 31 of volume II, which is where he is now. How many holes has Byron made? (Hint: If your answer is not between 110 and 120 you may prefer to try again before looking at the answer.) 
_______________________ XENOPHOBIA:
The good citizens of Xenophobia are so suspicious of foreigners that they won't even give them the time of day. A traveler passing through their village one morning noticed that the village clock had an hour hand only and that the numbers on the hourpips had been confusingly rearranged, as shown. He asked a passerby if the hour hand still pointed directly up for 12 o'clock. "No", came the curt reply. "Thank you. Can you also tell me how many hourpips are correctly numbered", asked the friendly tourist. "Definitely not. If you knew that, you could tell the time", snapped the passerby before scurrying off. What time (in hours) is the clock showing? 
_______________________ THE PARSIMONIOUS PROFESSOR:
Professor Parsimonious has a cylindrical measuring glass with a total capacity of 29 fluid ounces. He has had it for so long that all but the 7 and 19 fluid ounce graduation marks have worn off it. Still, the professor makes ingenious use of it. He recently measured out 21 fluid ounces of a solution by pouring a quantity of it into the glass once only. How did he perform this seemingly impossible feat? This is not a trick question. 
_______________________ SEAT OF LOGIC Alpha, Beta, Gamma, and Delta are the four savants shortlisted for the Chair of Logic at the University of Numerica. "Now then" began Professor Profundus, who was conducting the final interview. "Beside each of your names I have written down a number. To Alpha who is 25 years old I have given the number 132. to Beta who is 36 years old I have given the number 145 and to Gamma who is 57 years old I have given the number 169." The corner of his mouth twitched slightly as he continued mercilessly. "There is a simple relationship between each man's number and his age. The chair will go to the first of you who can tell me the number I have given to Delta who is 63 years old." The four aspirants shouted out the correct number immediately and almost simultaneously, but the chair went to Alpha who pipped the others by half a syllable. What is Delta's number? 
_______________________ LOCOMOTION: The distance between Bluebell and Maybelene is 150 km along a straight railroad. A locomotive leaves Bluebell for Maybelene at the leisurely speed of 24 km per hour. At the same time a locomotive leaves Maybelene for Bluebell at a speed one and a half times as fast again. How many kilometers from Bluebell are the locomotives when they meet up and the drivers pause for a chat? A bit of reasoning will make the solution easier. (The answer will be in kilometers so you can ignore the length of the locomotives.) 
_______________________ DIAGONAL THINKING:
Young cowboy Chuck Waggon owned a quartercircular piece of land on which he grazed his cattle. During a recent inspection tour he walked 112 meters directly east from point A to point B on the boundary of his land. He then turned and walked south (sorry, I've forgotten how far) to point C where he met up with his partner Heidi Heifer who had walked the 73 meters from point D to join him. Together they walked back, handinhand, directly to point A. How many meters is the diagonal distance from point C to point A? The logic of this mindbender is so obvious you will chide yourself if you don't see it and come up with the answer in less than a minute. 
_______________________ ISLAND HOPPER:
The grid features 9 recognisable islands (or groups) from different
regions of the world. Identify as many of the islands (or the
countries they make up) as you can before searching
for them on a map. 
_______________________ SCRABBLEDABBLE: Tilly and her partner decided to play a game of
scrabble. Her partner opened the game by
The tiles on Tilly's rack were,
Tilly played ALL her 7 tiles, placing some
before and some after the word tho, to make 
_______________________ JUNGLE POST: While exploring in the Amazon jungle, Professor Phootprintz, the eminent Anthropologist, discovered a 5 foot
ceremonial spear of a long lost tribe. When the professor went to send his find
back to his laboratory, he was informed by the jungle post office that regulations
prohibited mailing any package exceeding 3 feet in length. That did
not stop the clever professor mailing the 5 foot spear. He worked out a method to send
it in
accordance with postal regulations without having to bend or
break it. 
_______________________ LAND DIVISION:
Shep Dagg owns a lush field on which he grazes his sheep. The field has six waterholes as shown. For some reason known only to himself Shep wants to subdivide the field into six plots of equal shape and size yet each containing a waterhole. After a lot of headscratching he still can't figure out how to do it. Can you help him? 
_______________________ PUSSIES GALORE: I cannot claim credit for this puzzle. Variations of it have been around for hundreds of years. Here is my contribution. There are 7 girls in a bus. There is no driver nor other passengers on board.
How many legs are there in the bus. 
_______________________ 4CARD LOGIC: Black Jack took four cards from a standard deck and placed them face down. Diamond Lil looked over his shoulder and asked "What cards are they?". Black Jack replied, To the left of a
king are one or two jacks.
Diamond Lil then asked "But what are the suits?".
Black Jack replied: 
_______________________ OLD KING COLE:
Old King Cole was not such a merry old soul when he called for his fiddlers
four.
"Rubbish!" shouted the King. "Only some of your eight statements are
true." 
_______________________ MUSICAL CODE:
Mo Zart was sent to Naples from a nearby reconnaissance base to scout enemy positions prior to an impending advance on the city. He was given special instructions for his return to base. The instructions were encrypted as a musical piece, but it requires no musical knowledge to decipher. Letters of the alphabet have been replaced by musical notes. Each different note stands for a different letter, according to its type and position on the staff. The code may be a simple one, but I doubt if the melody would be music to anyone's ears. The note symbols and their inversions are read as being the
same. 
_______________________ WORDSWORTH:
The letters in this word grid have been replaced by the numbers 1 to 9. The same number stands for the same letter throughout. Replace the numbers with the letters they stand for to make 8 different words, 4 across and 4 down. The letter W occurs once only. It is correctly placed in the top righthand corner. 
_______________________ SQUARE DEAL: Black Jack took the ten cards from the ace up to the ten of diamonds and arranged them in a square as shown. The values of the cards on each of the four sides of the square, including the corners, added up to the same number  18. (The Ace counts as 1.) Diamond Lil reached over his shoulder and rearranged the cards
so that the totals of the card values on each side still were equal, but now added up to the highest possible number,

_______________________ THE DINING PARTY:
This puzzle is not as difficult as it seems. 
_______________________ HOW MANY RELATIVES A father, mother, two sons, daughter, grandfather, grandson, brother, sister, an uncle and a nephew, all from the same family, made up the singing group 'The Keynotes'. What is the least number of members of the family that could have been in the group? 
_______________________ BOX OF BEERS
Five cylindrical beer cans fit snugly into a square
box, as shown. 
_______________________ PERCE THE PUNTER
Perce the punter decided to try his luck at a
fivehorse race. The total of his bets came to $29. How much did Perce bet on each horse to make a profit of more than $5 on whichever horse won the race? 
_______________________ CENTER OF GRAVITY
The shadedin irregular figure
represents a flat piece of metal. Each shaded grid square is
of an equal weight. ______________________
