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Brain Teasers (page 34)puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 331 to 340. |
Which is a winning combination of digits?
. 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/2025/06/28/mastermind-1751069101.png','/Which-is-a-winning-combination-of-digits/8402'))
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 7043
. Each of the numbers can be used only once.','/archive/2025/06/27/numbermania-1750982701.png','/calculate-the-number-7043/8401'))
NUMBERMANIA: Calculate the number 7043 using numbers [8, 5, 6, 8, 55, 472] 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/2025/06/26/magic-square-1750896368.png','/MAGIC-SQUARE-Calculate-A-B-C/8400'))
The aim is to place the some numbers from the list (12, 13, 16, 17, 18, 20, 21, 26, 56, 57, 60, 83) 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. 
Fooling Around
One Sunday morning George burst into the living room and said, "Dad! Mom! I have some great news for you! I am getting married to the most beautiful girl in town. She lives a block away and her name is Susan. After dinner, George's dad took him aside, "Son, I have to talk with you. Look at your mother, George. She and I have been married 30 years, she's a wonderful wife and mother, but, she has never offered much excitement in the bedroom, so I used to fool around with women a lot."
"Susan is actually your half sister, and I'm afraid you can't marry her." George was brokenhearted.
After eight months he eventually started dating girls again. A year later he came home and very proudly announced, "Diane said yes! We're getting married in June." Again his father insisted on another private conversation and broke the sad news. "Diane is your half sister too, George.
"I'm awfully sorry about this." George was livid! He finally decided to go to his mother with the news his father had shared.
"Dad has done so much harm. I guess I'm never going to get married," he complained. "Every time I fall in love, Dad tells me the girl is my half sister."
"Hee hee," his mother chuckled, shaking her head, "Don't pay any attention to what he says. He's not really your father."
Find number abc
)
If 8b20a - c6bb1 = a04a2 find number abc. Multiple solutions may exist. 
Which is a winning combination of digits?
. 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/2025/06/24/mastermind-1750723501.png','/Which-is-a-winning-combination-of-digits/8398'))
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 1372
. Each of the numbers can be used only once.','/archive/2025/06/23/numbermania-1750637101.png','/calculate-the-number-1372/8397'))
NUMBERMANIA: Calculate the number 1372 using numbers [2, 1, 6, 3, 56, 630] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
)
If 4c698 - a00b3 = ac64b find number abc. Multiple solutions may exist. Calculate the number 4721
. Each of the numbers can be used only once.','/archive/2025/06/20/numbermania-1750377901.png','/calculate-the-number-4721/8395'))
NUMBERMANIA: Calculate the number 4721 using numbers [9, 7, 6, 5, 96, 697] 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/2025/06/19/magic-square-1750291570.png','/MAGIC-SQUARE-Calculate-A-B-C/8394'))
The aim is to place the some numbers from the list (3, 5, 6, 13, 15, 16, 23, 27, 45, 47, 48, 90) 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 90b77 + ab207 = 12b6cb find number abc. Multiple solutions may exist. 
