BRAIN TEASERS
The Most Difficult Tasks (page 89)

The Most Difficult Tasks (page 89)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 881 to 890.
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Find number abc

If ba92a + b51a9 = 1c6a29 find number abc. Multiple solutions may exist.
Correct answers: 1
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: 1
CHECK ANSWER
#brainteasers #mastermind
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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: 1
CHECK ANSWER
#brainteasers #mastermind

A man is being arrested

A man is being arrested by a female police officer, who informs him, "Anything you say can and will be held against you." The man replies, "Boobs!"
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Find number abc

If 4c787 + 39438 = 8cbba find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
[link]

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: 1
CHECK ANSWER
#brainteasers #mastermind
[link]

Find number abc

If 52aca - 212ba = c15cb find number abc. Multiple solutions may exist.
Correct answers: 1
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: 1
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: 1
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: 1
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: 1
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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Rayon

In 1902, the "making of cellulose esters" was jointly patented by William H. Walker, Arthur D. Little and Harry S. Mork of Massachusetts. (U.S. No. 709922). A month later, on 28 Oct 1902, they also patented artificial silk (No. 712,200). Viscose was an early name for the product. The term rayon was adopted by the textile industry in 1924 to replace "artificial silk" and similar names. It was said to derive from the French for "shine" - a reference to its silklike lustre. Unlike most man-made fibers, rayon is not synthetic. Made from wood pulp, a naturally-occurring, cellulose-based raw material, rayon's properties are more similar to those of natural cellulosic fibers, such as cotton or linen, than those of petroleum-based synthetic fibers such as nylon.
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