Question

First twenty counting numbers in base fifteen

Answer 1

Hello,

line 1 : in decimal, ; line 2: in pentadecimal

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20
1,2,3,4,5,6,7,8,9, A, B, C, D, E, 10,11,12,13,14,15

Answer 2

it is 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35. it's not that hard.