BRAIN TEASERS
The Easiest Tasks (page 9)

The Easiest Tasks (page 9)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 81 to 90.
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How many cigarettes do you see in this picture?

How many cigarettes do you see in this picture?
Correct answers: 318
The first user who solved this task is Sanja Šabović.
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#brainteasers #riddles
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 318
The first user who solved this task is Sanja Šabović.
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#brainteasers #math #riddles
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Calculate 7+3+4

If 5+7+2=68, 8+6+1=48 and 3+4+5=58 then 7+3+4=?
Correct answers: 313
The first user who solved this task is Linda Tate Young.
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#brainteasers #math #riddles

Love Me After Marriage

A married couple were quarreling.
Wife: You said you would love me more after marriage?
Husband: I did, but I didn't think you would say yes.

Jokes of the day - Daily updated jokes. New jokes every day.
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John introduces Mary as the ...

John introduces Mary as the daughter of the only son of my father's wife. How is Mary related to John?
Correct answers: 313
The first user who solved this task is Erkain Mahajanian.
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#brainteasers #riddles
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Can you decipher the hidden ...

Can you decipher the hidden month name hidden in the picture below?
Correct answers: 309
The first user who solved this task is Miloš Mitić.
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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: 309
The first user who solved this task is Manguexa Wagle.
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#brainteasers #math #riddles
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 308
The first user who solved this task is Manguexa Wagle.
CHECK ANSWER
#brainteasers #math #riddles
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Calculate 7+3

If 5+3=158, 9+1=910, 8+6=4814, 4+4=168 then 7+3=?
Correct answers: 308
The first user who solved this task is Roxana zavari.
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#brainteasers #math #riddles
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I hang or stand by a wall, run...

I hang or stand by a wall, run fast with hands but no feet at all. What am I?
Correct answers: 307
The first user who solved this task is On On Lunarbasil.
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#brainteasers #riddles
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Which number should replace the question mark?

Which number should replace the question mark?
Correct answers: 304
The first user who solved this task is Slobodan Strelac.
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#brainteasers #math #riddles
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Catalysis

In 1823, the effect of platinum as a catalyst was investigated by Johann Wolfgang Döbereiner, who found that hydrogen combined with air in the presence of platinum powder to form water, in a reacttion so vigorous that the filter paper holding the powder was charred. (It was later that the term catalysis was coined by Berzelius, in 1835.) Within a few days, on 3 Aug 1823, he invented the Döbereiner lighter process using the effect he had observed. He ignited a thin jet of hydrogen by passing it over spongy platinum in air. He designed a jar-type lighter using this method. Within three months, news of his discovery had been reported in some dozen European science journals. His lighter design was taken up by manufacturers to replace starting a fire with flint and tinder, and was in production for several decades.«
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