BRAIN TEASERS
The Most Difficult Tasks (page 190)

The Most Difficult Tasks (page 190)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1891 to 1900.
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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: 11
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: 11
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: 11
CHECK ANSWER
#brainteasers #mastermind

37 Christmas jokes

Why is the Grinch such a good gardener?
He has a green thumb.

What type of key do you need to put on a Nativity play?
A don-key.

Who is the only one to not eat at Christmas dinner?
The turkey, it’s always stuffed!

Why was the advent calendar afraid?
Its days were numbered!

What’s the best present to receive?
A broken drum, you just can’t beat it.

What’s a dog’s favorite Christmas song?
Bark, the Herald Angels Sing.

What carol is heard in the desert?
O camel ye faithful.

How can you tell that Santa is real?
You can always sense his presents.

What do you call a bankrupt Santa?
Saint Nick-less.

Who is Santa’s favorite singer?
Beyon-sleigh.

What does Santa clean his sleigh with?
Santa-tizer.

What kind of motorcycle does Santa ride?
A Holly Davidson.

How much did Santa pay for his sleigh?
Nothing, it was on the house.

Why did Santa’s helper start going to therapy?
He had low “elf” esteem.

What do Santa’s helpers learn in school?
The elf-abet.

What would you find on an elf’s Instagram account?
Lots of elf-ies.

Who is the best singer in the North Pole?
Elf-is Presley.

What did the elf on the shelf dress up as for Halloween?
Prankenstein.

Why didn’t Rudolph make honor roll in school this term?
Because he went down in history.

Which reindeer does Santa always have to discipline?
Rude-olph.

What do reindeer say before they tell a joke?
This one will sleigh you!

What do you get if you cross a snowman and a vampire?
Frostbite.

How did the snowman get to work?
By icicle!

What do snowmen wear on their heads?
Ice caps.

What do snowmen call their offspring?
Chill-dren.

What do grapes sing at Christmas?
‘Tis the season to be jelly.

Why shouldn’t you prank the eggnog?
It can’t take a yolk.

What did the gingerbread man put on his bed?
A cookie sheet.

Why don’t penguins fly?
They’re not tall enough to be pilots!

What do you call an art museum made out of ice?
The Ig-Louvre.

What’s as big as a Christmas tree but is lighter than a feather?
Its shadow.

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

If c5cba + c6084 = 5aba5 find number abc. Multiple solutions may exist.
Correct answers: 11
CHECK ANSWER
#brainteasers #math
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Find number abc

If 576cb - 4aab9 = c5b74 find number abc. Multiple solutions may exist.
Correct answers: 11
CHECK ANSWER
#brainteasers #math
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Find number abc

If 9a9c0 + 4983b = 14ab5b find number abc. Multiple solutions may exist.
Correct answers: 11
CHECK ANSWER
#brainteasers #math
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Find number abc

If 5b34a + 4333b = 102ca7 find number abc. Multiple solutions may exist.
Correct answers: 11
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: 11
CHECK ANSWER
#brainteasers #mastermind
[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: 11
CHECK ANSWER
#brainteasers #mastermind
[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: 11
CHECK ANSWER
#brainteasers #mastermind
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X-ray movie

In 1937, films of moving X-ray images on a fluorescopic screen showing the movement of organs of the human body were shown at the American Roentgen Ray Society convention. in New York City. The images were filmed with a home 16-mm movie camera at 16 frames per second (reduced to 12 or 8 fps for thicker bodies). Two seconds exposure could capture two or three beats of the heart, the act of breathing, movements of the diaphragm or motion of joints. Film clip loops could be projected to show repeating motion. The films were made by Drs William H. Stewart, William J. Hoffman and Francis H. Ghiselin from Manhattan's Lenox Hill Hospital. They reported their technique at the previous year's convention.«
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