Number of
Apples
Base 10
(Human Counting)
Base 4
(Lobster Counting)
Base 2
(Worm Counting)
(none) 0 0 0
I 1 1 1
II 2 2 10
III 3 3 11
IIII 4 10 100
IIIII 5 11 101
IIIIII 6 12 110
IIIIIII 7 13 111
IIIIIIII 8 20 1000
IIIIIIIII 9 21 1001
IIIIIIIIII 10 22 1010
IIIIIIIIIII 11 23 1011
IIIIIIIIIIII 12 30 1100
IIIIIIIIIIIII 13 31 1101
IIIIIIIIIIIIII 14 32 1110
IIIIIIIIIIIIIII 15 33 1111
IIIIIIIIIIIIIIII 16 100 10000
IIIIIIIIIIIIIIIII 17 101 10001
IIIIIIIIIIIIIIIIII 18 102 10010
IIIIIIIIIIIIIIIIIII 19 103 10011
IIIIIIIIIIIIIIIIIIII 20 110 10100
IIIIIIIIIIIIIIIIIIIII 21 111 10101
IIIIIIIIIIIIIIIIIIIIII 22 112 10110
IIIIIIIIIIIIIIIIIIIIIII 23 113 10111
IIIIIIIIIIIIIIIIIIIIIIII 24 120 11000
IIIIIIIIIIIIIIIIIIIIIIIII 25 121 11001
IIIIIIIIIIIIIIIIIIIIIIIIII 26 122 11010
IIIIIIIIIIIIIIIIIIIIIIIIIII 27 123 11011
IIIIIIIIIIIIIIIIIIIIIIIIIIII 28 130 11100
IIIIIIIIIIIIIIIIIIIIIIIIIIIII 29 131 11101
IIIIIIIIIIIIIIIIIIIIIIIIIIIIII 30 132 11110
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIII 31 133 11111
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII 32 200 100000