Replace the question mark with a number
[3215] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 447 - The first user who solved this task is Sanja Šabović
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 447
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
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There were these two blondes d...

There were these two blondes driving along the highway looking for a place to stop and picnic.
The first blonde says, "Let's stop here, and have our picnic under that tree."
The other says, "No! Let's have it right here in the middle of the road."
They argued about it for a bit, but finally agreed to have it in the middle of the road.
All of a sudden, a car comes speeding towards them and has to swerve into the tree to keep from hitting them.
The one blonde says to the other, "See? If we were under that tree, we'd be dead now!"
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Musical Arcs

In 1900, Nature reported the Musical Arcs invented by William Du Bois Duddell, an English physicist. By means of an arrangement of electric currents he produced a musical note from an arc lamp that could be altered to any pitch is obtained and a tune played. This may be regarded as the first fully electric instrument. While investigating the noise produced by the operation of carbon arc lamps - anything from a low hum to a high-pitched whistle - he found that adding resonance circuits adjusted the pitch of the sounds. His Singing Arc demonstrated this phenomenon using a keyboard connected to an arc lamp, giving audible results without any amplifier. He toured the country with his Singing Arc, as a novelty performance.«*
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