Răspuns:
11x11=121
12x12=144
13x13=169
14x14=196
15x15=225
16x16=256
17x17=289
18x18=324
19x19=361
20x20=400
21x21=441
22x22=484
23x23=529
24x24=576
25x25=625
26x26=676
27x27=729
28x28=784
29x29=841
30x30=900
31x31=961
32x32=1024
33x33=1089
34x34=1156
35x35=1225
36x36=1298
37x37=1369
38x38=1444
39x39=1521
40x40=1600
cu răsturnatul lui
11x11=121
12x21=252
13x31=403
14x41=574
15x51=765
16x61=976
17x71=1207
18x81=1458
19x91=1729
20x2=40
21x12=252
22x22=484
23x32=736
24x42=1008
25x52=1300
26x62=1612
27x72=1944
28x82=2296
29x92=2668
30x3=90
31x13=403
32x23=736
33x33=1089
34x43=1462
35x53=1855
36x63=2268
37x73=2701
38x83=3154
39x93=3627
40x4=160