1260 Challenging Brain Teasers Page 39 of 84
Brain teasers with multi difficulty levels to make you think hard and give you a sense of accomplishment when you solve them.
571. Tom is older than Sue, and Sue is younger than Mary, who is older than Tom. Who is the oldest of the three?
572. How many minutes would it be before six o'clock if fifty minutes earlier it had been four times as many minutes after three o'clock?
573. What word, expression, or name is depicted below?
79 S 34 A 92
F 185 E 376
7 T 27 Y 12
574. My first is a number, my second another,
And each, I assure you, will rhyme with the other.
My first you will find is one-fifth of my second,
And truly my whole a long period reckoned.
Yet my first and my second (nay, think not I cozen),
When added together will make but two dozen.
How many am I?
575. There are 10 baskets. Each of the 9 baskets have 10 balls weighing 10 kg each, except for one basket which has 10 balls weighing only 9 kg each. All the balls and baskets are identical in appearance. You are asked to determine which basket contains the 9 kg balls. You can only take a single measurement using a weighing machine (the balls can be taken out from the baskets but still you can only take one measurement). How would you do it?
576. What should be in place of the question marks?
XXOXXXXOOOXXXXXXXXOOOOOOOO
XXXXXXXXXXXXXXXXOOOOOOOOOOOOOOOOOOOO
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOO ? ? ? ? ? ? ? ? ? ?
577. By changing the second letter of each word below, you can make another valid word. Can you change each word such that the second letters will reveal an eleven letter word when read downwards. Therefore, what now reads AWPYRNUCEPA will be a real word.
BAKE
SWAP
OPAL
DYED
ARKS
SNOW
LUMP
ACES
MELT
SPUN
RANT
578. There are three errers in the statement of this problem.
You must detect all of them to recieve full credit.
579. When a suitor asked a father for his daughter's hand, the father answered, "It behooves all progenitors to so circumscribe the alliances of their progeny as to preclude all potential spouses inimical to conjugal euphoria. Perambulate to where your propinquity engenders no wishes for juxtaposition to you in my scion's sibling." What did the father say, yes or no?
580. Ann is now exactly two-fifths of her older sister's age, and two years from now she will be one-half of her older sister's age. Conversely, two years ago, Ann was only one-fourth the age of her older sister's age at that time. How old is Ann now? (She's a fairly young child, by the way.)
581. It will probably do you no good to spin the globe in the hope of finding the answer to this one. A knowledge of the Western Hemisphere is much more useful. At what point is the Pacific side of the Americas east of the Atlantic side?
582. Which of the following letters do not fit in the series?
A D G I J M P S
583. If a five-hour candle and a six-hour candle were lit at the same time, how much time would elapse before one candle would be five times longer than the other?
584. Answer this one quickly. After a gas tank of a car is filled, which happens first?
A. the tank is 3/4 empty
B. the tank is 2/3 full
585. You have a 12 liter jug, an 8 liter jug, and a 5 liter jug. None of the jugs have any markings on them. The 12 liter jug is full, and the other two are empty. How can you divide the 12 liters of water equally (i.e., so two of the jugs have exactly 6 liters of water in them, and the third is empty)?
