BRAIN TEASERS
Monthly Archive - November 2019

Monthly Archive - November 2019

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Which is a winning combination of digits?

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: 18
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind
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Calculate the number 2151

NUMBERMANIA: Calculate the number 2151 using numbers [3, 7, 2, 1, 58, 420] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 6
The first user who solved this task is Fazil Hashim.
CHECK ANSWER
#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A+B+C

The aim is to place the some numbers from the list (13, 14, 22, 30, 31, 39, 72, 73, 81, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B+C.
Correct answers: 9
The first user who solved this task is Fazil Hashim.
CHECK ANSWER
#brainteasers #math #magicsquare

Once there was this man whose...

Once there was this man whose car broke down. He realized after looking for help for 10 minutes that there was a small farmhouse with an old lady sitting on the porch. He told her his unfortunate story and she gladly let him in. But first she told him, "I have three rules that you mustn't break or I'll see to it that you meet justice! But since talking hurts my throat so much, I won't tell you my rules."
She let him sleep in the laundry room. He found himself a comfortable pile of old wool sweaters. After puffing his "pillow" he realized that a pair of pants were hanging down from a clothes line over top of his new bed. Seeing that it was no big deal he pulled them down. Instantly the old lady darted into the room and said, "You broke my first rule!"
He was sent outside to sleep in the donkey's stable. Right beside him was a tiny donkey kicking him so much that he slapped it. In a flash grandma was there: "You broke the second rule. Watch out."
He was sent onto the porch to sleep. All of a sudden a big, ugly cat came along and started rubbing all over him. Being allergic to cat hair, he shaved it bald. Here came the grandma. "You broke the third rule," she starts, "I'm calling the cops."
The cops came and requested a description of what happened. The old lady said, "That man is a damned rapist. He pulled down my pants, slapped my ass and shaved my pussy!"
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Find number abc

If 6c533 - b33a0 = 44153 find number abc. Multiple solutions may exist.
Correct answers: 19
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math
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Which is a winning combination of digits?

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: 16
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 682

NUMBERMANIA: Calculate the number 682 using numbers [8, 2, 2, 4, 25, 300] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 6
The first user who solved this task is Fazil Hashim.
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#brainteasers #math #numbermania
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Find number abc

If 8ab0c - cb715 = c288a find number abc. Multiple solutions may exist.
Correct answers: 14
The first user who solved this task is Fazil Hashim.
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#brainteasers #math
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Which is a winning combination of digits?

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: 19
The first user who solved this task is Fazil Hashim.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 208

NUMBERMANIA: Calculate the number 208 using numbers [3, 2, 3, 6, 33, 221] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 7
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (6, 10, 15, 25, 29, 31, 34, 35, 38, 40, 49, 69) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C.
Correct answers: 9
The first user who solved this task is Fazil Hashim.
CHECK ANSWER
#brainteasers #math #magicsquare
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Walter Noddack

Died 7 Dec 1960 at age 67 (born 17 Aug 1893).Walter Karl Friedrich Noddack was a German chemist who discovered the element rhenium (Jun 1925) in collaboration with his wife Ida Tacke. In 1922, he began a long search for undiscovered elements. After three years, the careful fractionation of certain ores yielded element 75, a rare heavy metallic element that resembles manganese. Named rhenium after the Rhine River, it was the last stable element to be discovered. Noddack is also remembered for arguing for a concept he called allgegenwartskonzentration or, literally, omnipresent concentration. This idea, reminiscent of Greek philosopher Anaxagoras, assumed that every mineral actually contained every element. The reason they could not all be detected was they existed in too small quantities.
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