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How many integers between 200 and 300 have the sum of their digits equal to 7?

 Oct 25, 2020
 #1
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205  214  223  232  241  250  >> Total = 6 such numbers between 200 and 300.

 Oct 25, 2020
 #2
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2+x+y=7

x+y=5

find all the pairs that will make this work.

 Oct 25, 2020

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