BRAIN TEASERS
Brain Teasers (page 72)

Brain Teasers (page 72)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 711 to 720.
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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: 0
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2393

NUMBERMANIA: Calculate the number 2393 using numbers [3, 9, 1, 1, 49, 252] 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 b9ab1 - 2b08b = cac66 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math

Anger versus Exasperation

A young girl who was writing a paper for school came to her father and asked, “Dad, what is the difference between anger and exasperation?”

The father replied, “It is mostly a matter of degree. Let me show you what I mean.”

With that the father went to the telephone and dialed a number at random. To the man who answered the phone, he said, “Hello, is Melvin there?”

The man answered, “There is no one living here named Melvin. Why don't you learn to look up numbers before you dial”.

“See,” said the father to his daughter. “That man was not a bit happy with our call. He was probably very busy with something and we annoyed him. Now watch….”

The father dialed the number again. “Hello, is Melvin there?” asked the father.

“Now look here!” came the heated reply. “You just called this number and I told you that there is no Melvin here! You've got lot of guts calling again!” The receiver slammed down hard.

The father turned to his daughter and said, “You see, that was anger. Now I'll show you what exasperation means.”

He dialed the same number, and when a violent voice roared, “Hello!”

The father calmly said, “Hello, this is Melvin. Have there been any calls for me?”

Jokes of the day - Daily updated jokes. New jokes every day.
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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: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 4152

NUMBERMANIA: Calculate the number 4152 using numbers [4, 6, 6, 6, 42, 703] 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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MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (20, 22, 26, 28, 29, 35, 51, 53, 60, 80) 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: 0
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 3b7ca + 39a88 = 7bcbc find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#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: 2
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 4553

NUMBERMANIA: Calculate the number 4553 using numbers [3, 9, 4, 7, 55, 435] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If a3377 + a86a3 = ba2c7c find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
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Paolo Ruffini

Born 22 Sep 1765; died 10 May 1822 at age 56.Italian mathematician and physician who made studies of equations that anticipated the algebraic theory of groups. He is regarded as the first to make a significant attempt to show that there is no algebraic solution of the general quintic equation (an equation with the variable in one term raised to the fifth power). In 1799 Ruffini published a book on the theory of equations with his claim that quintics could not be solved by radicals, General theory of equations in which it is shown that the algebraic solution of the general equation of degree greater than four is impossible. Ruffini used group theory in his work but he had to invent the subject for himself. He also wrote on probability and the application of probability to evidence in court cases.
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