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zarkam21:
1515?
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Vocaloid:
hm what did you get for a35?
zarkam21:
actually I rechecked my math is it 1890?
Vocaloid:
that's not what I got ;; how many seats did you find in row 35?
zarkam21:
n=35 and a35=20+34(2)=88, so S_35= 35/2[20+88]=1890
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Vocaloid:
oh nvm yeah that's right
zarkam21:
Lol thanks =)))
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