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Mathematics
Mathematics
Problem
Calculate the sum of the first 8 terms of the geometric progression
5
,
10
,
20
,
…
5,\,10,\,20,\ldots
5
,
10
,
20
,
…
. a)
255
255
255
b)
1275
1275
1275
c)
1280
1280
1280
d)
635
635
635
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