Prepare a set of cards by making a copy of the tables given here. Hand
them to the person whose age you wish to ascertain, and ask him to
name the cards on which his age appears.
If you then add together the first number on each of the cards he
names, the total will be the age required.
No. 1 Card No. 2 Card No. 3 Card No. 4 Card No. 5 Card No. 6 Card
1 29 2 30 4 30 8 28 16 28 32 44
3 31 3 31 5 31 9 29 17 29 33 45
5 33 6 34 6 36 10 30 18 30 34 46
7 35 7 35 7 37 11 31 19 31 35 47
9 37 10 38 12 38 12 40 20 48 36 48
11 39 11 39 13 39 13 41 21 49 37 49
13 41 14 42 14 44 14 42 22 50 38 50
15 43 15 43 15 45 15 43 23 51 39 51
17 45 18 46 20 46 24 44 24 52 40 52
19 47 19 47 21 47 25 45 25 53 41 53
21 49 22 50 22 52 26 46 26 54 42 54
23 51 23 51 23 53 27 47 27 55 43 55
25 53 26 54 28 54
27 55 27 55 29 55