BRAIN TEASERS
The Easiest Tasks (page 51)

The Easiest Tasks (page 51)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 501 to 510.
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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: 84
The first user who solved this task is James Lillard.
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#brainteasers #mastermind
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I am in Time, and I am in Ti...

I am in Time, and I am in Tie. I am in Fish, I am also sometimes only one. What Am I?
Correct answers: 83
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #riddles
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 83
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles

Prayer for the Winning

Q: What's the difference between prayer in church and prayer in a casino?

A: In a casino, you really mean it.

Jokes of the day - Daily updated jokes. New jokes every day.
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No matter how little or how ...

No matter how little or how much you use me, you change me every month. What am I?
Correct answers: 83
The first user who solved this task is FC Viñas.
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#brainteasers #riddles
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Find number abc

If 2a7bb + a97ca = 8a4ca find number abc. Multiple solutions may exist.
Correct answers: 83
The first user who solved this task is Snezana Milanovic.
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#brainteasers #math
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Find number abc

If 7b996 - 2072a = ab27c find number abc. Multiple solutions may exist.
Correct answers: 83
The first user who solved this task is Sanja Šabović.
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#brainteasers #math
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What number am I?

I am an odd number; take away an alphabet and I become even. What number am I?
Correct answers: 83
The first user who solved this task is On On Lunarbasil.
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#brainteasers #math #riddles
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Remove 3 letters from this seq...

Remove 3 letters from this sequence (UHECPALTH) to reveal a familiar English word.
Correct answers: 83
The first user who solved this task is On On Lunarbasil.
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#brainteasers #wordpuzzles
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Find number abc

If aa66c + a7cc5 = 7b887 find number abc. Multiple solutions may exist.
Correct answers: 83
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Find the value of the next number

Look at the series (1, 49, 162, 5364, 96481, 100121, ...), determine the pattern, and find the value of the next number.
Correct answers: 83
The first user who solved this task is Donya Sayah30.
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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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Edison incandescent lamp filament patent

In 1899, Thomas A. Edison was issued a patent for his “Filament for Incandescent Lamps, and Process of Manufacturing Same” (U.S. No. 626,460). “I form a filament of highly-refractory non-conducting material which is preferably porous, and incorporate therein isolated particles of carbon, so as to produce spark gaps between the particles, whereby high-tension currents, either alternating, continuous, or intermittent, will be conducted from particle to particle of the carbon to raise the filament to incandescence. ... I prefer to use ... an oxid or oxids of the rare earths—such as the oxid of zirconium, thorium and others. ... I prefer to admix ... a carbonizable organic compound—such as a solution of sugar, asphalt or tartrate of the oxid itself” which will be carbonized.«
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