Let
be in A.P. such that and If n is the least positive integer for which , then is equal to :
1/8
3
13/8
13/4
As we have learned
General term of an A.P. -
- wherein
First term
number of term
common difference
are in A.P
so first term
and
thus
thus n=25
Option 1)
1/8
Option 2)
3
Option 3)
13/8
Option 4)
13/4
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