+0  
 
0
195
1
avatar+567 

How many integers between 200 and 300 have the sum of their digits equal to 15?

SmartMathMan  Jan 21, 2018
 #1
avatar+93631 
+2

How many integers between 200 and 300 have the sum of their digits equal to 15?

 

First decide how many combinations of 2 digits make 13

  +13
2 94,49
2 85,58
2 76,67

 

So the only numbers are 

249

294

258

285

267

276

 

So that makes  6 integers

Melody  Jan 22, 2018

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