For series 1+9+90+900+9000+......the summation Sn=10^(n - 1)
Anyone can solve its Tn?? Remember, you must include 1 as the first component.
P/s: 10^(n-1) - 10^(n-2) is not accepted as the answer.
Radoslaw Jedynak
Dear Mason,
I suppose it should be given by the following formula:
T1=1
Tn=9*10^(n-2) for n>1
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Raul Simon
Thank you, Ahmed. If T_n is the general term of the given series, then T_n = 1 for n = - 1, and T_n = 9x10exp(n) for n not less than 0. Then, the sum of T_n from n = - 1 to n = N - 1 is 10exp(N).
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