Idents With Apron

Idents With Apron Idents With Apron

The earliest existing record of a telescope was a 1608 patent submitted to the government in the Netherlands by Middelbu...
07/03/2024

The earliest existing record of a telescope was a 1608 patent submitted to the government in the Netherlands by Middelburg spectacle maker Hans Lipperhey. The actual inventor is unknown but the word of it spread through Europe. Galileo heard about it and, in 1609, built his own version.

6174 is Kaprekar's constant. If you have a 4 digit number with at least 2 distinct digits, order the numbers within it i...
04/03/2024

6174 is Kaprekar's constant. If you have a 4 digit number with at least 2 distinct digits, order the numbers within it in ascending and descending order, subtract the smaller number from the larger, and repeat with the result, you'll eventually always end up with 6174.

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