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The Most Difficult Tasks (page 69)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 681 to 690. |
Calculate the number 3490
. Each of the numbers can be used only once.','/archive/2026/01/19/numbermania-1768781101.png','/calculate-the-number-3490/8603'))
NUMBERMANIA: Calculate the number 3490 using numbers [1, 6, 9, 8, 42, 316] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
Find number abc
)
If 97ccb - a5b79 = 7b8aa find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
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/2026/01/17/mastermind-1768608301.png','/What-a-winning-combination/8601'))
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. Correct answers: 1
#brainteasers #mastermind
A young boy had just gotten his driving permit...
A young boy had just gotten his driving permit. He asked his father, who was a minister, if they could discuss his use of the car. His father said to him, "I'll make a deal with you. You bring your grades up, study your Bible a little, and get your hair cut, then we will talk about it."
A month later the boy came back and again asked his father if they could discuss his use of the car. His father said, "Son, I'm real proud of you. You have brought your grades up, you've studied your Bible diligently, but you didn't get your hair cut!"
The young man waited a moment and replied, "You know Dad, I've been thinking about that. You know Samson had long hair, Moses had long hair, Noah had long hair, and even Jesus had long hair." His father replied, "Yes son, and they walked everywhere they went!"
Calculate the number 3468
. Each of the numbers can be used only once.','/archive/2026/01/16/numbermania-1768521901.png','/calculate-the-number-3468/8600'))
NUMBERMANIA: Calculate the number 3468 using numbers [9, 1, 8, 9, 21, 273] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
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/2026/01/15/magic-square-1768435543.png','/MAGIC-SQUARE-Calculate-A-B-C/8599'))
The aim is to place the some numbers from the list (9, 10, 11, 15, 16, 17, 28, 29, 30, 74, 82) 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. Correct answers: 1
#brainteasers #math #magicsquare
Find number abc
)
If ba4ba + b614c = 495c0 find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
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/2026/01/13/mastermind-1768262701.png','/What-a-winning-combination/8597'))
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. Correct answers: 1
#brainteasers #mastermind
Calculate the number 9399
. Each of the numbers can be used only once.','/archive/2026/01/12/numbermania-1768176301.png','/calculate-the-number-9399/8596'))
NUMBERMANIA: Calculate the number 9399 using numbers [2, 8, 7, 4, 99, 901] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
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/2026/01/10/mastermind-1768003501.png','/Find-the-right-combination/8594'))
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. Correct answers: 1
#brainteasers #mastermind
Calculate the number 8216
. Each of the numbers can be used only once.','/archive/2026/01/09/numbermania-1767917101.png','/calculate-the-number-8216/8593'))
NUMBERMANIA: Calculate the number 8216 using numbers [7, 6, 1, 9, 68, 585] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
