BRAIN TEASERS
The Most Difficult Tasks (page 718)

The Most Difficult Tasks (page 718)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 7171 to 7180.
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What is the next number in this series?

Look at the series (10, 9, 17, 50, 199, ?), determine the pattern, and find the value of the next number!
Correct answers: 85
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles
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What has teeth but can't bite?

What has teeth but can't bite?
Correct answers: 85
The first user who solved this task is undefined.
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#brainteasers #riddles
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How many pages does he have?

Josh is writing a book. He starts on page 1. When he finished, he used a total of 228 digits. How many pages does he have?
Correct answers: 85
The first user who solved this task is Dave Edmonds.
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#brainteasers #math #riddles

The results of your bold test

Doctor: “The results of your bold test have come in.”

“You mean blood test?”

“Hm, must be a Type-O.”

Author FinalCaveat user

Jokes of the day - Daily updated jokes. New jokes every day.
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CINEMANIA: Guess the movie title

See negative of movie scene and guess the title. Length of words in solution: 5
Correct answers: 85
The first user who solved this task is On On Lunarbasil.
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#brainteasers #movie #film #cinemania
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Find number abc

If 57a89 - c1cc9 = bac50 find number abc. Multiple solutions may exist.
Correct answers: 85
The first user who solved this task is Roxana zavari.
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#brainteasers #math
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What is hidden ...

What is hidden in this picture?
Correct answers: 85
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #riddles
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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: 85
The first user who solved this task is Sanja Šabović.
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#brainteasers #mastermind
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What is the next number in this series?

Look at the series (14, 19, 29, 40, 44, 52, 59, 73, ?), determine the pattern, and find the value of the next number!
Correct answers: 86
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles
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I start with an E, end with an...

I start with an E, end with an E and I only have one letter, what am I?
Correct answers: 86
The first user who solved this task is On On Lunarbasil.
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#brainteasers #riddles
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Perform this calculation in ...

Perform this calculation in your head, mentally adding the numbers as quickly as you can. Start with 1000 and add 40. Now add 1000. Add 30 to that, then add another 1000. Now add 20 to that result. Add another 1000 and finally, add 10 to that. What is the total?
Correct answers: 86
The first user who solved this task is Sanja Šabović.
CHECK ANSWER
#brainteasers #riddles
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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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Ultrasonic alarm

In 1953, the first U.S. patent for a burglar alarm operated by ultrasonic sound was issued to Samuel Bagno of New York City (No. 2,655,645) on a system for movement detection in a confined space by intruders or fire. It was manufactured as the Alertronic and first sold in Jun 1950. A sound source produced waves of 19,000 hertz, a frequency too high for normal human hearing. An intruder could be detected by the alarm by a difference in frequency of the reflected waves from the moving body (the Doppler effect). The device would then sound an alarm.
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