TEKA-TEKI : Indahnya Angka-angka Matematika

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1 x 9 + 2 = 11
12 x 9 + 3 = 111
123 x 9 + 4 = 1111
1234 x 9 + 5 = 11111
12345 x 9 + 6 = 111111
123456 x 9 + 7 = 1111111
1234567 x 9 + 8 = 11111111
12345678 x 9 + 9 = 111111111
123456789 x 9 +10= 1111111111

0 x 9 + 0 = 0
1 x 9 + 1 = 10
12 x 9 + 2 = 110
123 x 9 + 3 = 1110
1234 x 9 + 4 = 11110
12345 x 9 + 5 = 111110
123456 x 9 + 6 = 1111110
1234567 x 9 + 7 = 11111110
12345678 x 9 + 8 = 111111110
123456789 x 9 + 9 = 1111111110

9 x 9 + 7 = 88
98 x 9 + 6 = 888
987 x 9 + 5 = 8888
9876 x 9 + 4 = 88888
98765 x 9 + 3 = 888888
987654 x 9 + 2 = 8888888
9876543 x 9 + 1 = 88888888
98765432 x 9 + 0 = 888888888

12345679 x 9   = 111.111.111
12345679 x 18 = 222.222.222
12345679 x 27 = 333.333.333
12345679 x 36 = 444.444.444
12345679 x 45 = 555.555.555
12345679 x 54 = 666.666.666
12345679 x 63 = 777.777.777
12345679 x 72 = 888.888.888
12345679 x 81 = 999.999.999

987654321 x 9   = 8.888.888.889
987654321 x 18 = 17.777.777.778
987654321 x 27 = 26.666.666.667
987654321 x 36 = 35.555.555.556
987654321 x 45 = 44.444.444.445
987654321 x 54 = 53.333.333.334
987654321 x 63 = 62.222.222.223
987654321 x 72 = 71.111.111.112
987654321 x 81 = 80.000.000.001

1 + 2 + 3 + 4 + 5 + 6 = 21
1 + 2 + 3 + …….+ 66 = 2211
1 + 2 + 3 + …….+ 666 = 222111
1 + 2 + 3 + …….+ 6666 = 22221111
1 + 2 + 3 + …….+ 66666 = 2222211111
1 + 2 + 3 + …….+ 666666 = 222222111111

1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 98765
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321

1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
1111111 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111 = 12345678987654321

1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 98765
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321

1 x 18 + 1 = 19
12 x 18 + 2 = 218
123 x 18 + 3 = 2217
1234 x 18 + 4 = 22216
12345 x 18 + 5 = 222215
123456 x 18 + 6 = 2222214
1234567 x 18 + 7 = 22222213
12345678 x 18 + 8 = 222222212
123456789 x 18 + 9 = 2222222211

123456789 + 987654321 = 1111111110
1 x 142857 = 142857 (angka sama)
2 x 142857 = 285714 (angka sama beda urutan )
3 x 142857 = 428571 (angka sama beda urutan)
4 x 142857 = 571428 (angka sama beda urutan)
5 x 142857 = 714285 (angka sama beda urutan)
6 x 142857 = 857142 (angka sama beda urutan)
7 x 142857 = 999999 (waw......suatu hasil yang Fantastis)

Yang Terakhir :
123+45-67+8-9 =100
123+4-5+67-89 =100
123+4x5-6x7+8-9 =100
123-45-67+89 =100
123-4-5-6-7+8-9 =100
12+34+5x6+7+8+9 =100
12+34-5+6x7+8+9 =100
12+34-5-6+7x8+9 =100
12+34-5-6-7+8x9 =100
12+3+4+5-6-7+89 =100

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