# 数字的美和神秘

1987 →9871-1789=8082 → 8821-0288=8532 → 8532-2358=6174

4959 → 9954-4959 = 5355 → 5553-3555 = 1998 → 9981-1899 = 8082 → 8820-0288 = 8532 → 8532-2358 = 6174

142857 X 1 = 142857

142857 X 2 = 285714

142857 X 3 = 428571

142857 X 4 = 571428

142857 X 5 = 714285

142857 X 6 = 857142

142857 X 7 = 999999

142 + 857 = 999

14 + 28 + 57 = 99

142857 X 142857 = 20408122449

20408122449的前五位+后五位，得数是多少呢？

20408 + 122449 = 142857

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 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

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

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

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26.

H-A- R-D -W- O–R -K

8+1+18+4+23+15+18+11 = 98%

K–N –O–W–L–E-D-G-E

11+14+15+23+12+5+4+7+5 = 96%

A–T–T–I–T–U-D-E

1+20+20+9+20+21+4+5 = 100%

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