Geometric progression formula

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geometric progression formula
MeraSkill.com Online preparation for CA CPT,CS & CMA Foundation exam

2. MeraSkill.com Online preparation for CA CPT,CS & CMA Foundation exam
GP Series
2,4,8,16,32,64,128.
first term: a=2
common ratio:r=2
No of terms : n=7
l= last term =128=arn-1
GM
tn= arn-1
Sn = a(1-rn) /(1-r) that is when r<1
a(rn-1) /(r-1) that is when r>1

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