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The Most Difficult Tasks (page 131)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1301 to 1310. |
Calculate the number 4493
NUMBERMANIA: Calculate the number 4493 using numbers [6, 7, 7, 8, 69, 665] 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 (3, 5, 6, 7, 9, 10, 11, 27, 28, 29, 69, 76) 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 683
NUMBERMANIA: Calculate the number 683 using numbers [8, 3, 3, 2, 75, 322] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
Disappearing diner
A man and a beautiful woman were having dinner in a fine restaurant. Their waitress, taking another order at a table a few paces away suddenly noticed that the man was slowing sliding down his chair and under the table, but the woman acted unconcerned. The waitress watched as the man slid all the way down his chair and out of sight under the table. Still, the woman dining across from him appeared calm and unruffled, apparently unaware that her dining companion had disappeared.
After the waitress finished taking the order, she came over to the table and said to the woman, "Pardon me, ma'am, but I think your husband just slid under the table." The woman calmly looked up at her and replied firmly, "No he didn't. My husband just walked in the door."
Find number abc
If 71b20 - caaac = 11b2c find number abc. Multiple solutions may exist. Calculate the number 1366
NUMBERMANIA: Calculate the number 1366 using numbers [6, 4, 2, 5, 20, 836] 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 (11, 12, 18, 24, 25, 26, 27, 31, 33, 86, 96) 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 416
NUMBERMANIA: Calculate the number 416 using numbers [2, 3, 9, 5, 70, 268] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Calculate the number 7701
NUMBERMANIA: Calculate the number 7701 using numbers [7, 9, 1, 7, 15, 865] 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, 6, 7, 14, 15, 16, 20, 21, 22, 36, 97) 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 2914
NUMBERMANIA: Calculate the number 2914 using numbers [3, 6, 3, 9, 65, 761] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
