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Mathematics
Mathematics
Problem
In an arithmetic progression with common difference
d
d
d
, the value of
a
12
−
a
7
a_{12} - a_{7}
a
12
−
a
7
is a)
6
d
6d
6
d
b)
4
d
4d
4
d
c)
5
d
5d
5
d
d)
7
d
7d
7
d
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