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◆◆How many terms in A series of G . P are 3, 3 ^2 , 3^3 ,................. must be added to give their sum is 120.???
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till 4 terms
because 3+3^2+3^3+3^4= 3+9+27+81=120
because 3+3^2+3^3+3^4= 3+9+27+81=120
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