Replace the question mark with a number
[2615] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 454 - The first user who solved this task is Roxana zavari
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 454
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles
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April Fool's Day - Here are 5 pranks you can play on people

1. Add food coloring to milk that comes in a cardboard container.
2. Add food coloring to the windshield washer fluid of someone’s car.
3. Switch around random keys on someone’s keyboard who isn’t a very good typist.
4. Switch the Push and Pull signs on a set of doors.
5. Hide food in a trash can and when someone comes by grab some and eat it.
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John Mercer

Died 30 Nov 1866 at age 75 (born 21 Feb 1791).English chemist and industrialist who invented the mercerisation process for treating cotton which is still in use today and was a pioneer in colour photography. From age 16, and throughout his life, he investigated and developed chemical textile dyes. Late in his life, in 1844, he found that when cotton is treated with caustic chemicals, it became thicker and shorter - thereby stronger and shrink-resistant. Further, the cotton was more easily dyed, needed 30% less dye, more absorbant, and could be given an attractive silk-like lustre. He called his process mercerisation and patented it in 1850. Mercerisation was applied to many other materials, such as parchment and woolen fabric, and remains an important part of the cotton finishing process today.
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