Number x number = number
want similar combinations like ....
"201 X 103 = 20703"
reverse it to get
"30702 = 301 X 102"
1.30702 = 301 X 102
2.201 X 104 = 20904
2.40902 = 401 X 102
3.201 X 112 = 22512
3.21522 = 211 X 102
4.201 X 113 = 22713
4.31722 = 311 X 102
5.201 X 114 = 22914
5.41922 = 411 X 102
6.201 X 122 = 24522
6.22542 = 221 X 102
7.201 X 123 = 24723
7.32742 = 321 X 102
8.201 X 124 = 24924
8.42942 = 421 X 102
9.201 X 132 = 26532
9.23562 = 231 X 102
10.201 X 133 = 26733
10.33762 = 331 X 102
11.201 X 134 = 26934
11.43962 = 431 X 102
12.201 X 142 = 28542
12.24582 = 241 X 102
13.201 X 143 = 28743
13.34782 = 341 X 102
14.201 X 144 = 28944
14.44982 = 441 X 102
15.201 X 203 = 40803
15.30804 = 302 X 102
16.201 X 211 = 42411
16.11424 = 112 X 102
17.201 X 213 = 42813
17.31824 = 312 X 102
18.201 X 221 = 44421
18.12444 = 122 X 102
19.201 X 223 = 44823
19.32844 = 322 X 102
20.201 X 231 = 46431
20.13464 = 132 X 102
21.201 X 233 = 46833
21.33864 = 332 X 102
22.201 X 241 = 48441
22.14484 = 142 X 102
23.201 X 243 = 48843
23.34884 = 342 X 102
24.201 X 301 = 60501
24.10506 = 103 X 102
25.201 X 302 = 60702
25.20706 = 203 X 102
26.201 X 311 = 62511
26.11526 = 113 X 102
27.201 X 312 = 62712
27.21726 = 213 X 102
28.201 X 321 = 64521
28.12546 = 123 X 102
29.201 X 322 = 64722
29.22746 = 223 X 102
30.201 X 331 = 66531
30.13566 = 133 X 102
31.201 X 332 = 66732
31.23766 = 233 X 102
32.201 X 341 = 68541
32.14586 = 143 X 102
33.201 X 342 = 68742
33.24786 = 243 X 102
34.201 X 401 = 80601
34.10608 = 104 X 102
35.201 X 402 = 80802
35.20808 = 204 X 102
36.201 X 411 = 82611
36.11628 = 114 X 102
37.201 X 412 = 82812
37.21828 = 214 X 102
38.201 X 421 = 84621
38.12648 = 124 X 102
39.201 X 422 = 84822
39.22848 = 224 X 102
40.201 X 431 = 86631
40.13668 = 134 X 102
41.201 X 432 = 86832
41.23868 = 234 X 102
42.201 X 441 = 88641
42.14688 = 144 X 102
43.201 X 442 = 88842
43.24888 = 244 X 102
44.203 X 102 = 20706
44.60702 = 201 X 302
45.203 X 103 = 20909
45.90902 = 301 X 302
46.203 X 112 = 22736
46.63722 = 211 X 302
47.203 X 113 = 22939
47.93922 = 311 X 302
48.203 X 122 = 24766
48.66742 = 221 X 302
49.203 X 123 = 24969
49.96942 = 321 X 302
50.203 X 132 = 26796
50.69762 = 231 X 302
51.203 X 133 = 26999
51.99962 = 331 X 302
52.203 X 211 = 42833
52.33824 = 112 X 302
53.203 X 221 = 44863
53.36844 = 122 X 302
54.203 X 231 = 46893
54.39864 = 132 X 302
55.204 X 102 = 20808
55.80802 = 201 X 402
56.204 X 112 = 22848
56.84822 = 211 X 402
57.204 X 122 = 24888
57.88842 = 221 X 402
58.211 X 102 = 21522
58.22512 = 201 X 112
59.211 X 103 = 21733
59.33712 = 301 X 112
60.211 X 104 = 21944
60.44912 = 401 X 112
61.211 X 113 = 23843
61.34832 = 311 X 112
62.211 X 122 = 25742
62.24752 = 221 X 112
63.211 X 123 = 25953
63.35952 = 321 X 112
64.211 X 132 = 27852
64.25872 = 231 X 112
65.211 X 142 = 29962
65.26992 = 241 X 112
66.211 X 213 = 44943
66.34944 = 312 X 112
67.211 X 221 = 46631
67.13664 = 122 X 112
68.211 X 231 = 48741
68.14784 = 132 X 112
69.211 X 301 = 63511
69.11536 = 103 X 112
70.211 X 302 = 63722
70.22736 = 203 X 112
71.211 X 311 = 65621
71.12656 = 113 X 112
72.211 X 312 = 65832
72.23856 = 213 X 112
73.211 X 321 = 67731
73.13776 = 123 X 112
74.211 X 322 = 67942
74.24976 = 223 X 112
75.211 X 331 = 69841
75.14896 = 133 X 112
76.211 X 401 = 84611
76.11648 = 104 X 112
77.211 X 402 = 84822
77.22848 = 204 X 112
78.211 X 411 = 86721
78.12768 = 114 X 112
79.211 X 412 = 86932
79.23968 = 214 X 112
80.211 X 421 = 88831
80.13888 = 124 X 112
81.213 X 102 = 21726
81.62712 = 201 X 312
82.213 X 103 = 21939
82.93912 = 301 X 312
83.213 X 112 = 23856
83.65832 = 211 X 312
84.213 X 122 = 25986
84.68952 = 221 X 312
85.214 X 102 = 21828
85.82812 = 201 X 412
86.214 X 112 = 23968
86.86932 = 211 X 412
87.221 X 102 = 22542
87.24522 = 201 X 122
88.221 X 103 = 22763
88.36722 = 301 X 122
89.221 X 104 = 22984
89.48922 = 401 X 122
90.221 X 112 = 24752
90.25742 = 211 X 122
91.221 X 113 = 24973
91.37942 = 311 X 122
92.221 X 301 = 66521
92.12566 = 103 X 122
93.221 X 302 = 66742
93.24766 = 203 X 122
94.221 X 311 = 68731
94.13786 = 113 X 122
95.221 X 312 = 68952
95.25986 = 213 X 122
96.221 X 401 = 88621
96.12688 = 104 X 122
97.221 X 402 = 88842
97.24888 = 204 X 122
98.223 X 102 = 22746
98.64722 = 201 X 322
99.223 X 103 = 22969
99.96922 = 301 X 322
100.223 X 112 = 24976
100.67942 = 211 X 322
101.224 X 102 = 22848
101.84822 = 201 X 422
102.231 X 102 = 23562
102.26532 = 201 X 132
103.231 X 103 = 23793
103.39732 = 301 X 132
104.231 X 112 = 25872
104.27852 = 211 X 132
105.231 X 301 = 69531
105.13596 = 103 X 132
106.231 X 302 = 69762
106.26796 = 203 X 132
107.233 X 102 = 23766
107.66732 = 201 X 332
108.233 X 103 = 23999
108.99932 = 301 X 332
109.234 X 102 = 23868
109.86832 = 201 X 432
110.241 X 102 = 24582
110.28542 = 201 X 142
111.241 X 112 = 26992
111.29962 = 211 X 142
112.243 X 102 = 24786
112.68742 = 201 X 342
113.244 X 102 = 24888
113.88842 = 201 X 442
114.301 X 102 = 30702
114.20703 = 201 X 103
115.301 X 112 = 33712
115.21733 = 211 X 103
116.301 X 122 = 36722
116.22763 = 221 X 103
117.301 X 132 = 39732
117.23793 = 231 X 103
118.301 X 302 = 90902
118.20909 = 203 X 103
119.301 X 311 = 93611
119.11639 = 113 X 103
120.301 X 312 = 93912
120.21939 = 213 X 103
121.301 X 321 = 96621
121.12669 = 123 X 103
122.301 X 322 = 96922
122.22969 = 223 X 103
123.301 X 331 = 99631
123.13699 = 133 X 103
124.301 X 332 = 99932
124.23999 = 233 X 103
125.302 X 102 = 30804
125.40803 = 201 X 203
126.302 X 112 = 33824
126.42833 = 211 X 203
127.302 X 122 = 36844
127.44863 = 221 X 203
128.302 X 132 = 39864
128.46893 = 231 X 203
129.302 X 311 = 93922
129.22939 = 113 X 203
130.302 X 321 = 96942
130.24969 = 123 X 203
131.302 X 331 = 99962
131.26999 = 133 X 203
132.311 X 102 = 31722
132.22713 = 201 X 113
133.311 X 112 = 34832
133.23843 = 211 X 113
134.311 X 122 = 37942
134.24973 = 221 X 113
135.311 X 321 = 99831
135.13899 = 123 X 113
136.312 X 102 = 31824
136.42813 = 201 X 213
137.312 X 112 = 34944
137.44943 = 211 X 213
138.321 X 102 = 32742
138.24723 = 201 X 123
139.321 X 112 = 35952
139.25953 = 211 X 123
140.322 X 102 = 32844
140.44823 = 201 X 223
141.331 X 102 = 33762
141.26733 = 201 X 133
142.332 X 102 = 33864
142.46833 = 201 X 233
143.341 X 102 = 34782
143.28743 = 201 X 143
144.342 X 102 = 34884
144.48843 = 201 X 243
145.401 X 102 = 40902
145.20904 = 201 X 104
146.401 X 112 = 44912
146.21944 = 211 X 104
147.401 X 122 = 48922
147.22984 = 221 X 104
148.411 X 102 = 41922
148.22914 = 201 X 114
149.421 X 102 = 42942
149.24924 = 201 X 124
150.431 X 102 = 43962
150.26934 = 201 X 134
151.441 X 102 = 44982
151.28944 = 201 X 144
int counter = 1;
List<int> firsts = new List<int>();
List<int> seconds = new List<int>();
string result = string.Empty;
int x, y, z, p, q, r; int yyyy;
for (x = 200; x < 1000; x++)
{
for (y = 100; y < 1000; y++)
{
if (x != y)
{
if (x % 10 != 0)
{
if (y % 10 != 0)
{
p = int.Parse(new string(x.ToString().ToCharArray().Reverse().ToArray()));
q = int.Parse(new string(y.ToString().ToCharArray().Reverse().ToArray()));
if (p != x)
{
if (q != y)
{
r = (p * q);
z = int.Parse(new string((x * y).ToString().ToCharArray().Reverse().ToArray()));
yyyy = x * y ;
if (yyyy != z)
{
if (z == r)
{
bool toadd = true;
for (int aa = 0 ; aa < firsts.Count; aa++)
{
if ((firsts[aa] == y) && (seconds[aa] == x))
{
toadd = false; break;
}
}
if (toadd)
{
firsts.Add(x); seconds.Add(y);
result += counter.ToString() + "." + x.ToString() + " X " + y.ToString() + " = " + (x * y).ToString() + "\r\n";
result += counter.ToString() + "." + r.ToString() + " = " + q.ToString() + " X " + p.ToString() + "\r\n";
counter++;
}
}
}
}
}
}
}
}
}
}
textBox2.Text = result;