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The Most Difficult Tasks (page 255)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 2541 to 2550. |
What a winning combination?
. 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.','/archive/2019/12/07/mastermind-1575677102.png','/What-a-winning-combination/6175'))
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. Find number abc
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If 6abc3 + a93c9 = caab2 find number abc. Multiple solutions may exist. MAGIC SQUARE: Calculate A-B+C
 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.','/archive/2019/10/17/magic-square-1571270744.png','/MAGIC-SQUARE-Calculate-A-B-C/6124'))
The aim is to place the some numbers from the list (1, 3, 5, 8, 25, 27, 30, 38, 40, 42, 43) 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. 
At NC State University, the...
At NC State University, there were four sophomores taking Organic Chemistry.
They did so well on all the quizzes, midterms and labs, etc., that each had an "A" so far for the semester.
These four friends were so confident, that the weekend before finals, they decided to go up to the University of Virginia and party with some friends there. They had a great time. However, after all the hardy-partying, they slept all day Sunday and didn't make it back to Raleigh until early Monday morning.
Rather than taking the final then, they decided to find their professor after the final and explain to him why they missed it.
They explained that they had gone to UVA for the weekend with the plan to return Sunday to study, but, unfortunately, they had a flat tire on the way back, didn't have a spare, and couldnÂ’t get help for a long time. As a result, they missed the final. The Professor thought it over and then agreed they could make up the final the following day. The guys were elated and relieved. They studied that night and went in the next day at the time the professor had told them. He placed them in separate rooms and handed each of them a test booklet, and told them to begin. They looked at the first problem, worth 5 points. It was something simple about free radical formation. "Cool," they thought at the same time, each one in his separate room, "this is going to be easy." Each finished the problem and then turned the page. On the second page was written: For 95 points: Which tire?
Find number abc
)
If 5a12c - 10bcb = c6a81 find number abc. Multiple solutions may exist. 
What a winning combination?
. 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.','/archive/2019/08/06/mastermind-1565049902.png','/What-a-winning-combination/6052'))
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. MAGIC SQUARE: Calculate A*B+C
 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.','/archive/2019/07/11/magic-square-1562803538.png','/MAGIC-SQUARE-Calculate-A-B-C/6026'))
The aim is to place the some numbers from the list (15, 16, 22, 24, 25, 31, 36, 37, 43, 61, 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. Calculate the number 1257
. Each of the numbers can be used only once.','/archive/2019/05/27/numbermania-1558915501.png','/calculate-the-number-1257/5983'))
NUMBERMANIA: Calculate the number 1257 using numbers [6, 4, 9, 3, 54, 264] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
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If a5a93 - b5acb = c00a9 find number abc. Multiple solutions may exist. Calculate the number 1520
. Each of the numbers can be used only once.','/archive/2019/04/26/numbermania-1556237101.png','/calculate-the-number-1520/5952'))
NUMBERMANIA: Calculate the number 1520 using numbers [1, 7, 8, 4, 96, 763] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find a famous person
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Find the first and the last name of a famous person. Text may go in all 8 directions. Length of words in solution: 4,10. 
