BRAIN TEASERS
The Most Difficult Tasks (page 113)

The Most Difficult Tasks (page 113)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1121 to 1130.
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Find number abc

If ab2c9 - 69abb = 1b365 find number abc. Multiple solutions may exist.
Correct answers: 2
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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
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 4090

NUMBERMANIA: Calculate the number 4090 using numbers [8, 6, 6, 8, 47, 628] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania

Cat Scan

A woman took her dog to the vet. She said, "I think my dog is dead". The doctor laid the dog on the table and reached down and took a cat out of a box. The cat walked all over the dog and the dog didn't move. "Yes, your dog is dead," says the doctor.
"How much do I owe you?" the lady asks.
"$345," says the doctor.
"$345!!?" the lady asks.
"Yes. $45 for the office visit and $300 for the cat scan."

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Calculate the number 3625

NUMBERMANIA: Calculate the number 3625 using numbers [1, 7, 1, 1, 78, 596] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Calculate the number 1996

NUMBERMANIA: Calculate the number 1996 using numbers [9, 4, 1, 4, 80, 168] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Find number abc

If 188a6 + cb3c4 = 8a2cb find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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MAGIC SQUARE: Calculate A-B*C

The aim is to place the some numbers from the list (11, 13, 19, 21, 23, 27, 29, 32, 43, 45, 51, 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: 2
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#brainteasers #math #magicsquare
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Find number abc

If ab1b4 - c6b63 = cba1 find number abc. Multiple solutions may exist.
Correct answers: 2
CHECK ANSWER
#brainteasers #math
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Find number abc

If 6bbc6 - ca964 = 3cb6c find number abc. Multiple solutions may exist.
Correct answers: 2
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: 2
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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Newton's Principia Published

In 1687, the Principia, by Isaac Newton, was published. It was titled (in Latin): Philosophiæ Naturalis Principia Mathematica. Translated into English, the title is The Principia: Mathematical Principles of Natural Philosophy, familiarly known as simply the Principia. The original was written in Latin, because it was the universal language of scholars in many countries countries. In this monumental work, Newton gave an insightful mathematical analysis of the relationships between force, motion and time, as in acceleration and inertial motion. He also outlined the motion of the heavenly bodies. This book was the original publication to the world of his now famously-known three Laws of Motion, and the Law of Universal Gravitation. His treatment of the subject is still reflected in basic physics textbooks.«
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