BRAIN TEASERS
Brain Teasers (page 128)

Brain Teasers (page 128)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 1271 to 1280.
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Calculate the number 6549

NUMBERMANIA: Calculate the number 6549 using numbers [5, 7, 7, 6, 32, 945] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Find number abc

If abc3b + b82c2 = b0a783 find number abc. Multiple solutions may exist.
Correct answers: 1
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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: 2
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#brainteasers #mastermind

A secretary walked into her bo...

A secretary walked into her boss's office and said, "I'm afraid I've got some bad news for you."
"Why do you always have to give me bad news?" he complained. "Tell me some good news for once."
"Alright, here's some good news," said the secretary. "You're not sterile."
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Calculate the number 1300

NUMBERMANIA: Calculate the number 1300 using numbers [7, 4, 3, 1, 14, 129] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (10, 12, 16, 25, 29, 31, 35, 51, 68, 70, 74) 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: 1
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#brainteasers #math #magicsquare
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Find number abc

If b9a14 - bb96c = 1a5c find number abc. Multiple solutions may exist.
Correct answers: 12
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#brainteasers #math
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What a winning 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: 3
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1268

NUMBERMANIA: Calculate the number 1268 using numbers [9, 2, 5, 8, 38, 378] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 3879a + c02c7 = b90c2 find number abc. Multiple solutions may exist.
Correct answers: 4
CHECK ANSWER
#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: 4
CHECK ANSWER
#brainteasers #mastermind
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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.
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Alfred Lewis Vail

Born 25 Sep 1807; died 18 Jan 1859 at age 51.American telegraph pioneer and an associate and financial backer of Samuel F.B. Morse in the experimentation that made the telegraph a commercial reality. The final form of the Morse code was perfected by Vail who simplified the whole process by introducing the telegraph key. Vail is responsible for the efficiency of the code, using the principle that the most frequently sent letters should have the shortest code.
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