3 Maths Pyramid - For The Mathematics Minded

General Forums Off-topic Chat
1

This one is doing the rounds in the emails so I’d share it with yous:

           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

2

Hey, that’s…uh…

3

Hmm… Very interesting.

4

I feel ill now