The Mathematical Garden

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Games
Black and White
HEX
Magic
Mark Six
Recursion, Games and Strategy
SIM

A Magic Game

  1. Think of a 'two-digit' number (e.g.78)

  2. Subtract the two digits from the number and get the 'code'.
    (e.g. the code in this case is 78-7-8=63)

  3. Find the symbol corresponds to the code in the Table below.

  4. Memorise the symbol and then press 'Ready ?'.
    (What Did you find? Can you explain it?)

  5. Hint: (10x +y) - (x+y).

99b 98{ 97i 96z 95b 94d 93{ 92h 91J 90f
89U 88u 87i 86l 85n 84u 83S 82x 81z 80z
79O 78{ 77l 76d 75R 74o 73R 72z 71I 706
69T 68N 67a 66b 65v 64o 63z 62o 61n 60S
59M 586 57M 56N 55m 54z 53x 52J 51N 50^
496 48{ 47f 46a 45z 44J 43h 42i 41v 40h
39M 38o 37l 36z 35d 34^ 336 32{ 31f 30N
29n 28a 27z 26U 25U 24J 23M 22o 21J 20J
19n 18z 17z 16i 15l 14S 13u 12n 11T 10l
9z 8T 7{ 6l 5f 4u 3I 2I 1d 0z
Ready ?
Department of Mathematics, HKU, 2010