BRAIN TEASERS
The Most Difficult Tasks

The Most Difficult Tasks

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Find number abc

If c40b1 + a313b = 15b208 find number abc. Multiple solutions may exist.
Correct answers: 0
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Calculate the number 935

NUMBERMANIA: Calculate the number 935 using numbers [3, 2, 1, 5, 79, 358] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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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 (12, 13, 15, 22, 23, 25, 28, 29, 31, 68, 72, 91) 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
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#brainteasers #math #magicsquare

Immaculate Miracle?

A woman takes her 16-year-old daughter to the doctor. "Okay, Mrs. Jones, what's the problem?"The mother says, "It's my daughter, Debbie. She keeps getting these cravings, she's putting on weight, and she is sick most mornings." The doctor gives Debbie a good examination, then turns to the mother and says, "Well, I don't know how to tell you this, but your Debbie is pregnant--about four months would be my guess."The mother says, "Pregnant?! She can't be, she has never been left alone with a man! Have you, Debbie?" Debbie says, "No mother! I've never even kissed a man!" The doctor walked over to the window and stared outside. About five minutes passed before the mother said, "Is there something wrong out there, doctor?" The doctor replied, "No, not at it. It's just that the last time anything like this happened, a star appeared in the east and three wise men came over the hill. I'm not going to miss it this time around!"
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Find number abc

If 9a1cc - b9aa9 = 5acbb find number abc. Multiple solutions may exist.
Correct answers: 0
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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: 0
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#brainteasers #mastermind
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Calculate the number 1689

NUMBERMANIA: Calculate the number 1689 using numbers [5, 3, 1, 1, 28, 559] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania
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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
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#brainteasers #mastermind
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Calculate the number 1346

NUMBERMANIA: Calculate the number 1346 using numbers [1, 3, 8, 5, 91, 479] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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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 (5, 6, 11, 13, 14, 19, 29, 31, 32, 37) 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
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#brainteasers #math #magicsquare
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Find number abc

If c708b - 78aa0 = 1886b find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math
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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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Heinrich Ludwig d' Arrest

Died 14 Jun 1875 at age 52 (born 13 Aug 1822).Heinrich Ludwig d' Arrest was a German astronomer who, while a student at the Berlin Observatory, hastened the discovery of Neptune by suggesting comparison of the sky, in the region indicated by Urbain Le Verrier's calculations, with a recently prepared star chart. The planet was found the same night. His father-in-law was A. F. Moebius (1790 - 1868). d'Arrest found several comets, the one of 1851 with a period of 6.6 years bears his name. One work he published was on the Asteroids between Mars and Jupiter, another work titled Siderum nebulosorum observationes Hafniensis contained 1942 nebula, 340 described for the first time.[DSB gives date of birth as 13 Aug 1822. EB states 13 July 1822.]
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