nth term of the series 9, 99, 999, 9999.
Is there any formula for it?
9
99
999
9999
. . . .
2026-03-25 04:40:49.1774413649
nth term of the series containing one 9 then two 9 and so on
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1
The general formula is $$10^n-1$$ as each term is one less than a power of $10$.