BRAIN TEASERS
The Most Difficult Tasks (page 138)

The Most Difficult Tasks (page 138)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1371 to 1380.
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Find number abc

If 5ac24 - 42b32 = ccb2 find number abc. Multiple solutions may exist.
Correct answers: 3
CHECK ANSWER
#brainteasers #math
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Find number abc

If ac2a4 + 65c43 = b44bba find number abc. Multiple solutions may exist.
Correct answers: 3
CHECK ANSWER
#brainteasers #math
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Which is a winning combination of digits?

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: 3
CHECK ANSWER
#brainteasers #mastermind

World Cotton Day Jokes

On 7th October it's World Cotton Day! Let's have some cotton-themed humor:

I’m allergic to cotton
I would take medicine for it, but I can’t get it out of the bottle

I told my kids I was gonna take them to that place with the Ferris wheel and cotton candy, but instead I took them to the dentist
They said it wasn’t fair

My teacher in workshop laughed when I said I could make a deadly knife out of cotton...
...After I sharpened the tip, he backed down saying, "I see you've made your point."

"Why is that cotton candy talking?"
"Grandma, that's Nicki Minaj"

Scientists have created a cotton plant resistant to boll weevils.
When asked about it, they replied, "It's unbollweevible."

#worldcottonday
Jokes of the day - Daily updated jokes. New jokes every day.
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Find number abc

If 96cca - 5b0bb = baca8 find number abc. Multiple solutions may exist.
Correct answers: 3
CHECK ANSWER
#brainteasers #math
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Which is a winning combination of digits?

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: 3
CHECK ANSWER
#brainteasers #mastermind
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Find the right 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: 3
CHECK ANSWER
#brainteasers #mastermind
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Find number abc

If 32ba0 + 55a3b = aa3cb find number abc. Multiple solutions may exist.
Correct answers: 3
CHECK ANSWER
#brainteasers #math
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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (2, 3, 5, 6, 11, 14, 36, 65, 66, 70, 74, 78) 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: 3
CHECK ANSWER
#brainteasers #math #magicsquare
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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: 3
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2964

NUMBERMANIA: Calculate the number 2964 using numbers [3, 4, 9, 3, 27, 912] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
CHECK ANSWER
#brainteasers #math #numbermania
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Parity nonconservation proposed

In 1956, The Physical Review published a paper by Tsung Dao Lee and Chen Ning Yang on the Question of Parity Conservation in Weak Interactions. They addressed an issue that had long been believed, but for which there had been no experimental support. Yet, there existed a Theta-Tau Puzzle (C.F. Powell, 1949) in the disintegration of certain cosmic ray particles via the nuclear weak force. Lee and Yang believed this was because of parity violation, which contradicted the generally accepted "law" of conservation of parity. They proposed a study of experiments involving weak interactions. Chien-Shiung Wu validated non-conservation of parity on 27 Dec 1956 in their suggestion to study beta decay of cobalt-60.«
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