Mind Reading with Numbers

Certain series of numbers have wonderful properties.
To show this I will read your mind by using these numbers.

  • Step 1. First pick a number between 1 and 60 (1 and 60 included) and
    memorize it. Do not mention the number, I might hear it.
  • Step 2. Check-mark all groups below that do not contain your number.
  • Step 3. Press the button and I will tell you what number it was.
    • Group A 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59
    Group B 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31 40 41 42 43 44 45 46 47 56 57 58 59 60
    Group C 2 3 6 7 10 11 14 15 18 19 22 23 26 27 30 31 34 35 38 39 42 43 46 47 50 51 54 55 58 59
    Group D 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
    Group E 4 5 6 7 12 13 14 15 20 21 22 23 28 29 30 31 36 37 38 39 44 45 46 47 52 53 54 55 60
    Group F 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 48 49 50 51 52 53 54 55 56 57 58 59 60

    © This script was written by Paul Barendregt

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