Question
How many numbers can be formed using the digits $0,1,2,3,4,5$ without repetition so that the resulting numbers are between 100 and 1000 ?
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$\lim _{x \rightarrow 0}\left[\frac{\log (1+9 x)}{x}\right]$
If $\lim _{x \rightarrow 2} \frac{x^n-2^n}{x-2}=80$ then find the value of $\mathrm{n}$.