Special multiplication

Puzzles, situation puzzles and recreational mathematics.

situation puzzles and recreational mathematics. Neuron juice

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The important thing is not to stop questioning. (Albert Einstein.)

Special multiplication, squaring 111,111,111 .


Dos es igual a uno

If you want to do some accounts, or check the result of multiplying itself the number 111111111 with calculator safe have in the pc will verify that the result is something special.
On the contrary if you prefer , directly, the result simply lower the bottom of the page and see , mathematical magic ?






If we multiply the number 111 111 111 by itself, or what is the same, if we square , we obtain as a result the number :