Hello,
I do not succeed more to have a list according to the number of columns that I chose.
Thank you
Fabrice

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\item La suite \m{\left(U_n\right)} est géométrique de premier terme \m{U_0 = 10} et de raison \m{q = 3 }, alors :

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\item \math{U_4 = 22}
\item \math{U_4 = 810}
\item \math{U_4 = 10 \times  3^3}
\item \math{U_4 = 10 +  3 \times 4}

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