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    Beauty of Mathematics

    Sequential Inputs of numbers with 8
    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


    Sequential 1's with 9
    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


    Sequential 8's with 9
    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


    Numeric Palindrome with 1's
    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


    Without 8
    12345679 x 9 = 111111111
    12345679 x 18 = 222222222
    12345679 x 27 = 333333333
    12345679 x 36 = 444444444
    12345679 x 45 = 555555555
    12345679 x 54 = 666666666
    12345679 x 63 = 777777777
    12345679 x 72 = 888888888
    12345679 x 81 = 999999999


    Sequential Inputs of 9
    9 x 9 = 81
    99 x 99 = 9801
    999 x 999 = 998001
    9999 x 9999 = 99980001
    99999 x 99999 = 9999800001
    999999 x 999999 = 999998000001
    9999999 x 9999999 = 99999980000001
    99999999 x 99999999 = 9999999800000001
    999999999 x 999999999 = 999999998000000001
    ......................................


    Sequential Inputs of 6
    6 x 7 = 42
    66 x 67 = 4422
    666 x 667 = 444222
    6666 x 6667 = 44442222
    66666 x 66667 = 4444422222
    666666 x 666667 = 444444222222
    6666666 x 6666667 = 44444442222222
    66666666 x 66666667 = 4444444422222222
    666666666 x 666666667 = 444444444222222222
    ......................................


    Amazing Prime Numbers
    Here are few amazing prime numbers, these prime numbers were proved by the XVIIIth century.

    31
    331
    3331
    33331
    333331
    3333331
    33333331

    The next number 333333331 is not a prime number. Whereas it is multiplied by 17 x 19607843 = 333333331.



    read the full article her

    [code:1]http://knowledgebin.org/kb/entry/158/[/code:1]
  • 2 Comments sorted by
  • know what..this actually helps in quick calculations in the examination room!!
  • How nice! It's amazing. Thanks for sharing such great things.

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