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).

99R 98I 97a 96v 95o 94h 93J 92m 91I 90i
89J 88f 87d 86z 85M 84f 83a 82T 81I 80N
79M 78u 77l 76N 75o 74b 73f 72I 71f 70d
69v 68l 67T 66I 65x 64J 63I 62o 61i 60O
59u 58J 57x 56o 55i 54I 53f 52a 51l 50n
49M 48l 47T 46z 45I 44x 43o 42{ 41R 40d
39J 38b 37o 36I 35T 34b 33h 32z 31i 30T
29S 28R 27I 26{ 25h 24U 23f 22T 21m 20J
19I 18I 17a 16^ 15o 14{ 13N 12o 116 10^
9I 8l 7h 6l 5f 4h 3d 2d 1J 0I
Ready ?
Department of Mathematics, HKU, 2010