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).

99i 98n 97d 96b 95O 94R 93l 92f 91l 90S
89i 88U 87u 86{ 85f 84m 83v 82h 81v 80x
79b 78z 77a 76z 75l 74^ 73{ 72v 71J 70R
69J 68z 67^ 66x 65O 646 63v 62z 61v 60b
59R 58h 57J 56S 55{ 54v 53^ 52S 51S 50l
49i 48i 47o 46b 45v 44I 43i 42^ 41T 40a
39N 38h 37n 36v 35i 34{ 336 32T 31b 30M
29N 28x 27v 26d 25R 24R 236 22i 21M 20{
19{ 18v 17x 16a 15^ 146 13u 12S 11{ 10x
9v 8U 7I 6u 5I 4{ 3J 2I 1o 0v
Ready ?
Department of Mathematics, HKU, 2010