Question 1148176
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479 = 20*23 + 19.


In other words, the remainder of division of the number 479 by 23 is 19.


So, any number  n= 4, 4 + 23, 4 + 2*23, 4 + 3*23 and so on,

added to 479, makes it divisible by 23.
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Answered, solved and explained.