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The Most Difficult Tasks (page 150)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1491 to 1500. |
Calculate the number 300
. Each of the numbers can be used only once.','/archive/2021/12/03/numbermania-1638489901.png','/calculate-the-number-300/7106'))
NUMBERMANIA: Calculate the number 300 using numbers [3, 4, 2, 8, 43, 173] 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/2021/12/02/magic-square-1638403517.png','/MAGIC-SQUARE-Calculate-A-B-C/7105'))
The aim is to place the some numbers from the list (6, 7, 11, 13, 15, 16, 20, 52, 53, 57) 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 4485
. Each of the numbers can be used only once.','/archive/2021/11/22/numbermania-1637539501.png','/calculate-the-number-4485/7095'))
NUMBERMANIA: Calculate the number 4485 using numbers [4, 6, 1, 7, 73, 796] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
Mid Semester Final Exam
One night Jack Evans, along with his 3 university friends went out drinkinig till late night, as many college students are prone to do, and didn't study for their test, which, of course, was scheduled for the next day.
In the morning they thought of a plan. They made themselves look as dirty and weird as they could with grease and dirt.
They went up to the dean and explained that they had gone out to a wedding last night and on their return the tire of their car burst. They continued to explain how they had to push the car all the way back and that they were in no condition to appear for the test.
The dean, being a compassionate human being said that they could take the test after 3 days. The students graciously replied that they'd be ready by that time.
On the third day, they appeared before the dean. The dean explained that since this was a special test all four were required to sit in separate classrooms for the duration of the exam.
They all agreed as they had prepared well in the last three days. The test consisted of 5 questions with total of 100 points:
MID SEMESTER COURSEWORK EXAMINATION
INSTRUCTIONS : All questions are required. Any inconsistencies on any of the questions among the four students will result in all the candidates getting a zero mark.
Q.1. Write down your name. ----- (2 POINTS) Q.2. Write the name of the bride and groom at the wedding you attended. ----- (30 POINTS) Q.3. What type of a car were you driving? ------(20 POINTS) Q.4. Which tire burst? ------- (28 POINTS) Q.5. Who was driving? ------ (20 POINTS)
Calculate 876+876-876
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If 123+741-900=2196 and 900+144-876=6569 then 876+876-876=? 
Decrypt hidden message
?','/archive/2016/10/21/2900.png','/Decrypt-hidden-message/2900'))
Can you decrypt hidden message (1C42 92S1 T5B38 OV1 IS B3LT5B38S 1C4ROVGC4)? 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/2023/08/19/mastermind-1692403501.png','/What-a-winning-combination/7727'))
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. Find number abc
)
If 7c8b7 - b0b57 = acaa0 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/2023/06/27/mastermind-1687824301.png','/Which-is-a-winning-combination-of-digits/7675'))
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. 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/2023/06/13/mastermind-1686614701.png','/Which-is-a-winning-combination-of-digits/7661'))
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. Find number abc
)
If 9c50b + b79aa = bbbaa5 find number abc. Multiple solutions may exist. 
