BRAIN TEASERS
The Most Difficult Tasks (page 6)

The Most Difficult Tasks (page 6)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 51 to 60.
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Find number abc

If 1acbb + 66612 = b1a00 find number abc. Multiple solutions may exist.
Correct answers: 0
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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: 0
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 484

NUMBERMANIA: Calculate the number 484 using numbers [3, 2, 5, 6, 94, 900] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania

An old man lived alone in Idah...

An old man lived alone in Idaho. He wanted to spade his potato garden, but it was very hard work. His only son, Bubba, who used to help him, was in prison. The old man wrote a letter to his son and described his predicament.
Dear Bubba:
I am feeling pretty bad because it looks like I won't be able to plant my potato garden this year. I'm just getting too old to be digging up a garden plot. If you were here, all my troubles would be over. I know you would dig the plot for me.
Love, Dad
A few days later, he received a letter from his son.
Dear Dad:
For heaven's sake, Dad, don't dig up that garden. That's where I buried the BODIES.
Love, Bubba
At 4 a.m. the next morning, FBI agents and local Police showed up and dug up the entire area without finding any bodies. They apologized to the old man and left.
That same day, the old man received another letter from his son.
Dear Dad:
Go ahead and plant the potatoes now. It's the best I could do under the circumstances.
Love, Bubba
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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (4, 5, 7, 8, 9, 12, 22, 23, 27, 46) 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 7bb32 - 6ac90 = cc3a2 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
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Calculate the number 5936

NUMBERMANIA: Calculate the number 5936 using numbers [1, 9, 1, 4, 61, 721] 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 2b9bb + baaa7 = c2a22 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: 0
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 401

NUMBERMANIA: Calculate the number 401 using numbers [3, 7, 3, 1, 26, 340] 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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MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (1, 4, 5, 15, 18, 19, 23, 70, 73, 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: 0
CHECK ANSWER
#brainteasers #math #magicsquare
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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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Charles Benjamin Dudley

Born 14 Jul 1842; died 21 Dec 1909 at age 67.American chemical engineer who was an early supporter of standardisation and material testing in industry. From 1875, as a chemist for the Pennsylvania Railroad Company, he researched the metallurgy of steel rail tracks because their breakage was a serious hazard at that time. When he discovered enormous variation in the quality of steel and published his results (1878), the manufacturers were at first uncooperative. However, Dudley insisted on continuing testing, and rigorous standards for fuels, lubricants, paints, lighting devices and various mechanical parts of locomotives and rolling stock. He co-founded (1898) the American Society for Testing and Materials, and was its president from 1902 until his death.«
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