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).

99v 98z 97v 96h 95o 94N 93R 92N 91v 90u
89S 88R 87T 86J 85x 84d 83o 82v 81i 80M
79f 78U 77M 76a 75U 74J 73T 72i 716 70i
69I 68T 67N 66m 65O 64N 63i 62d 61z 60l
59d 58{ 57h 56f 55U 54i 53b 52M 51a 50o
49i 48N 47R 46u 45i 44o 43^ 42a 41f 40U
39{ 38M 37b 36i 35{ 34I 33d 32i 31z 30i
29b 28O 27i 26N 256 24I 23N 22M 21U 20^
19^ 18i 17U 16^ 15N 14x 13h 12o 11m 10h
9i 8h 7O 6n 5h 4O 3J 2v 1a 0i
Ready ?
Department of Mathematics, HKU, 2010