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Monthly Archive - January 2020brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10. |
Calculate the number 7395
NUMBERMANIA: Calculate the number 7395 using numbers [5, 4, 8, 7, 74, 765] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. MAGIC SQUARE: Calculate A*B-C
The aim is to place the some numbers from the list (5, 8, 9, 23, 26, 27, 60, 63, 64, 67, 84) 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
If 46bac + 410c2 = b7bba find number abc. Multiple solutions may exist. 
The Death of Black Magic
An old man and woman were married for years even though they hated each other. When they had a confrontation, screams and yelling could be heard deep into the night. A constant statement was heard by the neighbors who feared the man the most. "When I die I will dig my way up and out of the grave to come back and haunt you for the rest of your life!"
They believed he practiced black magic and was responsible for missing cats and dogs, and strange sounds at all hours. He was feared and enjoyed the respect it garnished.
He died abruptly under strange circumstances and the funeral had a closed casket. After the burial, the wife went straight to the local bar and began to party as if there was no tomorrow. The gaiety of her actions were becoming extreme while her neighbors approached in a group to ask these questions: Are you not afraid? Concerned? Worried? that this man who practiced black magic and stated when he died he would dig his way up and out of the grave to come back and haunt you for the rest of your life?
The wife put down her drink and said..."let the old bastard dig. I had him buried upside down."
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. Calculate the number 1998
NUMBERMANIA: Calculate the number 1998 using numbers [7, 7, 4, 1, 37, 252] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
If aac0b - a0c71 = 19c7 find number abc. Multiple solutions may exist. 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. Calculate the number 9159
NUMBERMANIA: Calculate the number 9159 using numbers [9, 7, 9, 8, 78, 534] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. MAGIC SQUARE: Calculate A+B-C
The aim is to place the some numbers from the list (10, 12, 16, 29, 31, 35, 62, 64, 68, 75) 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
If 3a42a + c4ac0 = 10bbba find number abc. Multiple solutions may exist.