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 4a9cc + 991b4 = 14a111 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 454

NUMBERMANIA: Calculate the number 454 using numbers [1, 6, 1, 8, 18, 158] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania

Three elderly men are taking a...

Three elderly men are taking a walk outside their nursing home. The first one says, "Windy, isn't it?" The second one says, "No, it's Thursday!" The third one says, "So am I. Let's go get a beer."
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Find number abc

If aa3bc - bac55 = 195cb 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
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 8404

NUMBERMANIA: Calculate the number 8404 using numbers [8, 9, 4, 4, 65, 949] 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 (9, 10, 11, 14, 15, 16, 42, 54, 55, 56, 79) 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 a606b + 8227b = 1c8cc8 find number abc. Multiple solutions may exist.
Correct answers: 0
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#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: 0
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 898

NUMBERMANIA: Calculate the number 898 using numbers [1, 9, 9, 9, 76, 286] 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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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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Hugo von Mohl

Born 8 Apr 1805; died 1 Apr 1872 at age 66. German botanist noted for his research on the anatomy and physiology of plant cells. He was also first to propose that new cells are formed by cell division. He saw that the nucleus of the cell was within the granular, colloidal material that made up the main substance of the cell. In 1846, he named this substance protoplasm (a word invented by the Czech physiologist Jan Evangelista Purkinje to describe the embryonic material found in eggs). He carefully described (1835-39) some details of mitosis in plants, a process he observed in the alga Conferva glomerata. He recorded the appearance of the cell plate between daughter cells. He remarked, “Cell division is everywhere easily and plainly seen...in terminal buds and root tips.”
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