$[0/6\mathrm{.}66$ Points$]$

Find the best$-$case number of $$ comparisons performed by the following pseudocode segment.

Preconditions: nin$\{5,10,15,20,25\}.$

while $n<mn>1</mn><mn>4</mn><mtext></mtext><mi>d</mi><mi>o</mi>$

$n+n+5$

Tell which values of $n$ produce the best case. $($Enter your answers as a comma$-$separated list.$)$

$x$