BRAIN TEASERS
The Most Difficult Tasks (page 174)

The Most Difficult Tasks (page 174)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1731 to 1740.
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Find number abc

If 8b2a8 - cba60 = 29c18 find number abc. Multiple solutions may exist.
Correct answers: 9
CHECK ANSWER
#brainteasers #math
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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: 9
CHECK ANSWER
#brainteasers #mastermind
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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: 9
CHECK ANSWER
#brainteasers #mastermind

Paying For His Mistake

A husband and wife had a big argument. Frustrated and fed up, the wife called up her mom and said, "We fought again, I can't do this anymore. I am coming to live with you."

Mom said, "No darling, he must pay for his mistake. I am coming to live with you."

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Find number abc

If cb2b4 + aab74 = 13a27a find number abc. Multiple solutions may exist.
Correct answers: 9
CHECK ANSWER
#brainteasers #math
[link]

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: 9
CHECK ANSWER
#brainteasers #mastermind
[link]

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: 9
CHECK ANSWER
#brainteasers #mastermind
[link]

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: 9
CHECK ANSWER
#brainteasers #mastermind
[link]

Find number abc

If 8b6c9 - c5348 = 533a find number abc. Multiple solutions may exist.
Correct answers: 9
CHECK ANSWER
#brainteasers #math
[link]

Find number abc

If ba53b + c573a = 7c2cb find number abc. Multiple solutions may exist.
Correct answers: 9
CHECK ANSWER
#brainteasers #math
[link]

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: 9
CHECK ANSWER
#brainteasers #mastermind
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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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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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