How does it work?


 

What he told me was that he added the numbers in the upper left corner of each card I identified. Thus if I identified the first and last cards he would add 32 and 1 to get 33 as the number I chose.

Can you see why it works?

 


 
32333435
36373839
40414243
44454647
48495051
52535455
56575859
60616263
16171819
20212223
24252627
28293031
48495051
52535455
56575859
60616263
891011
12131415
24252627
28293031
40414243
44454647
56575859
60616263
4567
12131415
20212223
28293031
36373839
44454647
52535455
60616263
2367
10111415
18192223
26273031
34353839
42434647
50515455
58596263
1357
9111315
17192123
25272931
33353739
41434547
49515355
57596163
 
 
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