Which number should replace the question mark?
[74] Which number should replace the question mark? - Which number should replace the question mark? - #brainteasers #math #riddles - Correct Answers: 303 - The first user who solved this task is Slobodan Strelac
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Which number should replace the question mark?

Which number should replace the question mark?
Correct answers: 303
The first user who solved this task is Slobodan Strelac.
#brainteasers #math #riddles
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April Fool's Day - Here are 5 pranks you can play on people

1. Conference call two people then don’t say anything, just listen.
2. Place a ‘house for sale’ ad in the newspaper for someone’s home.
3. Paint the tips of someone’s pen and pencil with clear nail polish so none of them work.
4. Hide a small radio in the ceiling tiles above someone’s desk and turn it on very softly.
5. Fill someone’s hair-dryer with baby powder.
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Artificial leg

In 1846, the first U.S. patent for an artificial leg was granted to Benjamin F. Palmer of Meredith, New Hampshire (No. 4,834). The leg had a pliable joint that worked noiselessly and preserved its contour in all positions. It presented no openings in the exterior of the legs about the joints and contained tendons of gut and springs arranged in such a manner as to give more elasticity, stength, durability and freedom of motion than previously available. Artificial legs had been used previously: in 1837 one was exhibited by Howland & Co of Brookfield, Mass., at the Massachusetts Charitable Mechanics Association.
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