Find the sum of n term of an AP 8,16,24,32,40........48
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no:of terms. n=6
a=8,d=8
sn=n/2{2 a+(n-1)d}
s6=6/2{2x8 +(6-1) 8}
s6=6/2{16 +40}
S6=6/2x56
S 6= 168
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