BRAIN TEASERS
The Most Difficult Tasks (page 125)

The Most Difficult Tasks (page 125)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1241 to 1250.
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Calculate the number 1143

NUMBERMANIA: Calculate the number 1143 using numbers [4, 9, 8, 8, 51, 959] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Calculate the number 2184

NUMBERMANIA: Calculate the number 2184 using numbers [2, 1, 1, 6, 98, 820] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (13, 20, 22, 27, 28, 29, 35, 50, 52, 58, 65) 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: 2
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#brainteasers #math #magicsquare

Entrance Exam

A Christian, a Muslim and a Buddhist die and arrive at the Gate of Heaven.
An angel (or deva) stops them and asks, "Why do you come here? Can you tell me the reasons why you are allowed to enter Heaven?"
The Christian replies, "My ancestors disobeyed God, and I sinned all my life: I killed, I lied, I cheated my wife and I was greedy. However, Jesus died for me and all my sins are forgiven. So I deserve to enter Heaven."
"OK," replies the Angel. "Sounds good, but I must give you an entrance examination before you can enter." The Christian promptly agrees and the Angel asks him: "How do you spell God?"
It is an easy question, and the Christian passes through the Gate.
Next came the Muslim, who says, "I did not do any especially good or evil things during my life but I was very devout. I prayed to God five times a day. So, I too should enter Heaven."
The Angel replies, "It sounds OK to me, but I have to give you a test also. How do you spell Allah?"
The Muslim passes the test and enters Heaven.
Finally, it is the Buddhist's turn. He tells the Angel, "I've done all the good things in my life and I followed Buddha's five precepts: I never killed, I donated to charities, I meditated every day, and I never cheated my boss nor my customers."
The Angel replies, "That is very good, but there are no exceptions. You must pass the entrance test also in order to get in."
Thinking that the test should be simple, the Buddhist happily agrees. The Angel then asks him: "How do you spell Avalokitesvara Bodhisattva?"
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Find number abc

If cc77a - bbb87 = bbcab find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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Find number abc

If 10218 + 6bbc6 = 7b7ba find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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Find number abc

If 3bb30 + 7abca = cca8aa find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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Calculate the number 5696

NUMBERMANIA: Calculate the number 5696 using numbers [5, 7, 9, 9, 23, 822] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Find number abc

If 7b3bc + 5a306 = c336b7 find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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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.
Correct answers: 2
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#brainteasers #mastermind
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Find number abc

If 925ab - 117bc = a0ac9 find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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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.
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Wilder Dwight Bancroft

Born 1 Oct 1867; died 7 Feb 1953 at age 85. American physical chemist who introduced a number of thermodynamic and colloid-chemical concepts into American physicochemistry.
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