find the common difference d in the following aps a=3 n=8 d=?
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Given :-a=3,n=8
an=a+(n-1)d
a8=3+(8-1)d
a8=3-7d
3-7d=0
Let us assume that 3-7d=0
=>3=7d
=>7d=3
=>d=3/7
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