BRAIN TEASERS
Monthly Archive - October 2013

Monthly Archive - October 2013

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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On which finger will she stop?

A little girl counts from 1 to 1000 using the fingers of her left hand as follows. She starts by calling her thumb 1, the first finger 2, middle finger 3, ring finger 4, and little finger 5. Then she reverses direction, calling the ring finger 6, middle finger 7, the first finger 8, and her thumb 9, after which she calls her first finger 10, and so on. If she continues to count in this manner, on which finger will she stop?
Correct answers: 149
The first user who solved this task is s.n.d.rishita chintapalli.
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#brainteasers #riddles
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Calculate the number 100

NUMBERMANIA: Calculate the number 100 using numbers [1, 1, 4, 2, 20, 75] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 56
The first user who solved this task is Eric Newton.
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#brainteasers #math #numbermania
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Find the area of the shaded figure

Express result to the accuracy of 2 decimal.
Correct answers: 42
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math

An Almost Affair

A married man goes into a confessional and says to his priest

"I had an affair with a woman... almost."

The priest says, "What do you mean, almost?"

The man says, "Well, we got undressed and rubbed together, but then I stopped."

The priest says, "Rubbing together is the same as putting it in. You're not to see that woman again. For your penance, say 5 Hail Marys and put $50 in the poor box."

The man leaves the confessional, says his prayers, then walks over to the poor box.

He pauses for a moment and then starts to leave.

The priest, who was watching, quickly runs over to him saying, "I saw that, you didn't put any money in the poor box!"

The man replies, "Yeah, but I rubbed the $50 on the box, and apparently that's the same as putting it in."

Joke first seen Posted by Jem on thinkhumanism.com foruum, on July the 22nd, 2007,

Image by Peter H from Pixabay

Jokes of the day - Daily updated jokes. New jokes every day.
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Word Association: BOX, INSTRUMENT, GENRE, SOUND

Word Association: BOX, INSTRUMENT, GENRE, SOUND
Correct answers: 117
The first user who solved this task is Eric Newton.
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#brainteasers #wordpuzzles #wordassociations
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Which number should replace the question mark?

FUNNY MATH: Which number should replace the question mark?
Correct answers: 78
The first user who solved this task is Slobodan Strelac.
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#brainteasers #math #riddles
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Word Association: FAST, SOUL, ORGANIC, CHINESE

Word Association: FAST, SOUL, ORGANIC, CHINESE
Correct answers: 138
The first user who solved this task is Eric Newton.
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#brainteasers #wordpuzzles #wordassociations
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Which number should replace the question mark?

FUNNY MATH: Which number should replace the question mark?
Correct answers: 143
The first user who solved this task is Eric Newton.
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#brainteasers #math #riddles
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Calculate 9*(29+321+151)

FUNNY MATH: Calculate 9*(29+321+151) :)
Correct answers: 23
The first user who solved this task is Slobodan Strelac.
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#brainteasers #math
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Find the right combination

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 62
The first user who solved this task is Sanja Šabović.
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#brainteasers #mastermind
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Find the area of the shaded figure

Express result to the accuracy of 2 decimal.
Correct answers: 66
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math
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Flotation process patent

In 1898, English brothers Alexander and Francis El applied for a British patent (No. 21,948) for their flotation process to separate valuable ore, such as copper, from the gangue (worthless rock) with which it is associated when mined. It was the first practical equipment to extract metals from low-content ore. Pulverized ore is mixed with water and brought into contact with thick oil. The oil entraps the metallic constituents, which are afterwards separated, and gangue passed away with the water. Today, flotation methods remain vital in the mining industry, processing millions of tons of ores each year.
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