Find sn if a=5,r=3,n=12
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Answer:
Sn = 350
Step-by-step explanation:
as we know for G.P.
Sn= a(1-rn)(1-r)
Sn= 5 (1- 36) (1- 3)
Sn = 5 (-35) (-2)
Sn = 350 mark me brainliest
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