the sum of the digits 2014 is 7. How many whole numbers between 100 and 999 have 9 as the sum of their digits?

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17-04-2020
Mathematics

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the sum of the digits 2014 is 7. How many whole numbers between 100 and 999 have 9 as the sum of their digits?

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bookdragon174 bookdragon174 · Answer 1 · 2020-04-18T01:38:27+02:00

bookdragon174 bookdragon174

18-04-2020

Answer:

45

Step-by-step explanation:

this should be correct :)

There are 9 in the 100's

108

117

126

135

144

153

162

171

180

There are 8 in the 200's (starting to see a pattern?)

207

216

225

234

243

252

261

270

There are 7 in the 300's

306

315

324

333

342

351

360

9+8+7+6+5+4+3+2+1 = 45

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