Multiplication

[Deleted member 4993]

Who knew:

111,111,111 x 111,111,111 = 12,345,678,987, 654,321

 

[Steven G]

I actually did! There are many of these. I guess a number theorist knows all of them--why would they do that to themselves!

 

[topsquark]

I actually did! There are many of these. I guess a number theorist knows all of them--why would they do that to themselves!

Good job. No corner for you today. ?

-Dan

 

[lookagain]

Who knew:

111,111,111 x 111,111,111 = 12,345,678,987, 654,321

I did because of the extension of the pattern: 1*1, 11*11, on up to a limited point.