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Mathematics
Problem
The ratio of the sums of the first 12 terms to the first 6 terms of an arithmetic progression is 7 : 3. What is the ratio of the first term to the common difference? a)
31
:
2
31:2
31
:
2
b)
15
:
1
15:1
15
:
1
c)
93
:
8
93:8
93
:
8
d)
2
:
31
2:31
2
:
31
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