Comme un jeu

$ \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} $

Courses

Order the following numbers from least to greatest: $$15, 8, 21, 13$$Choose one answer:

$15 \lt 8 \lt 21 \lt 13$
$8 \lt 21 \lt 15 \lt 13$
$8 \lt 13 \lt 15 \lt 21$
$15 \lt 13 \lt 8 \lt 21$