Jawabanmu

2014-04-17T21:37:47+07:00
209,218,227,236,245,254,263,272,281
totalnya 9 bilangan bener gak? :v
1 5 1
2014-04-17T21:39:40+07:00
A=207 | Un=297 | 297=207+(n-1)9 | 90=9n-9 | 99=9n | n=11 | S11=11/2 (207+297)=11/2(504)=2772
207,216,225,234,243,252,261,270,279,288,297

297
207

504 x 5 + 252 = 1020+252
= 1272
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kok jadi 2272 bukannya 2772
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