For a sequence 1, -5, 25,-125 ….. tn =
1) (-5)1-n 2) (-5)n-1 3) (5)1-n 4) (5)n-1
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Step-by-step explanation:
It is clearly a GP becoz Common ratio is -5
for a GP
Tn=
Here a =1 and r =-5
so Tn=
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