Question

List the first twenty counting numbers in base nine

Answer 1

$1_{10}=1_9$
$2_{10}=2_9$
$3_{10}=3_9$
$4_{10}=4_9$
$5_{10}=5_9$
$6_{10}=6_9$
$7_{10}=7_9$
$8_{10}=8_9$
$9_{10}=10_9$
$10_{10}=11_9$
$11_{10}=12_9$
$12_{10}=13_9$
$13_{10}=14_9$
$14_{10}=15_9$
$15_{10}=16_9$
$16_{10}=17_9$
$17_{10}=18_9$
$18_{10}=20_9$
$19_{10}=21_9$
$20_{10}=22_9$