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The Most Difficult Tasks (page 142)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1411 to 1420. |
Find number abc
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If c9466 - 69194 = aba7a 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/2022/11/10/magic-square-1668038729.png','/MAGIC-SQUARE-Calculate-A-B-C/7447'))
The aim is to place the some numbers from the list (5, 6, 15, 23, 24, 30, 31, 33, 40, 47) 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. 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/2022/11/08/mastermind-1667865901.png','/What-a-winning-combination/7445'))
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. 
Three Doors
An airline captain was breaking in a new stewardess. The route they were flying had a layover in another city. Upon their arrival, the captain showed the stewardess the best place for airline personnel to eat, shop and stay overnight.
The next morning, as the pilot was preparing the crew for the day's route, he noticed the new stewardess was missing. He knew which room she was in at the hotel and called her up wondering what happened. She answered the phone, crying, and said she couldn't get out of her room. "
You can't get out of your room?" the captain asked, "Why not?"
The stewardess replied: "There are only three doors in here," she sobbed, "one is the bathroom, one is the closet, and one has a sign on it that says 'Do Not Disturb'!"
Find the right 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/2022/11/05/mastermind-1667606701.png','/Find-the-right-combination/7442'))
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
)
If 88502 + bb0b8 = ca5580 find number abc. Multiple solutions may exist. Find number abc
)
If 4bbaa - b8077 = ac045 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/2022/10/20/magic-square-1666224352.png','/MAGIC-SQUARE-Calculate-A-B-C/7426'))
The aim is to place the some numbers from the list (14, 15, 16, 18, 19, 20, 32, 33, 34, 54, 93) 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. 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/2022/10/15/mastermind-1665792302.png','/What-a-winning-combination/7421'))
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. Calculate the number 489
. Each of the numbers can be used only once.','/archive/2022/10/10/numbermania-1665360301.png','/calculate-the-number-489/7416'))
NUMBERMANIA: Calculate the number 489 using numbers [9, 9, 4, 5, 97, 992] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Calculate the number 1612
. Each of the numbers can be used only once.','/archive/2022/10/07/numbermania-1665101102.png','/calculate-the-number-1612/7413'))
NUMBERMANIA: Calculate the number 1612 using numbers [4, 9, 9, 8, 89, 169] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
