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Monthly Archive - April 2026 (page 3)brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30. |
Calculate the number 6588
. Each of the numbers can be used only once.','/archive/2026/04/10/numbermania-1775779501.png','/calculate-the-number-6588/8683'))
NUMBERMANIA: Calculate the number 6588 using numbers [4, 4, 8, 8, 46, 504] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 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/2026/04/09/magic-square-1775693126.png','/MAGIC-SQUARE-Calculate-A-B-C/8682'))
The aim is to place the some numbers from the list (2, 6, 8, 9, 17, 19, 20, 62, 64, 65) 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. Find number abc
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If 4a18c - 1a3b3 = c98a9 find number abc. Multiple solutions may exist. 
Did I say he was dead?
A 60-year-old man went to a doctor for a check-up. The doctor told him, "You're in terrific shape. There's nothing wrong with you. Why, you might live forever; you have the body of a 35-year-old. By the way, how old was your father when he died?"
The 60-year-old responded, "Did I say he was dead?"
The doctor was surprised and asked, "How old is he and is he very active?"
The 60-year-old responded, "Well, he is 82 years old and he still goes skiing three times a season and surfing three times a week during the summer."
The doctor couldn't believe it! So he said, "Well, how old was your grandfather when he died?"
The 60-year-old responded again, "Did I say he was dead?"
The doctor was astonished. He said, "You mean to tell me you are 60 years old and both your father and your grandfather are alive? Is your grandfather very active?"
The 60-year-old said, "He goes skiing at least once a season and surfing once a week during the summer. Not only that," said the patient, "my grandfather is 106 years old, and next week he is getting married again."
The doctor said, "At 106 years why on earth would your grandfather want to get married?"
His patient looked up at the doctor and said, "Did I say he wanted to?"
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/2026/04/07/mastermind-1775520301.png','/Find-the-right-combination/8680'))
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 7328
. Each of the numbers can be used only once.','/archive/2026/04/06/numbermania-1775433901.png','/calculate-the-number-7328/8679'))
NUMBERMANIA: Calculate the number 7328 using numbers [5, 5, 3, 3, 98, 819] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
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If 7b0a8 + 544ab = cb65a0 find number abc. Multiple solutions may exist. 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/2026/04/04/mastermind-1775261101.png','/Find-the-right-combination/8677'))
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 1085
. Each of the numbers can be used only once.','/archive/2026/04/03/numbermania-1775174701.png','/calculate-the-number-1085/8676'))
NUMBERMANIA: Calculate the number 1085 using numbers [8, 1, 6, 6, 51, 677] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 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/2026/04/02/magic-square-1775088324.png','/MAGIC-SQUARE-Calculate-A-B-C/8675'))
The aim is to place the some numbers from the list (11, 13, 16, 18, 20, 22, 27, 57, 59, 64) 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. Find number abc
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If b6b62 + 7acba = a558b find number abc. Multiple solutions may exist. 
