The Write Stuff

Everyone knows that 3 x 7 is 21, but how many people know what 333 x 777 is, without using a calculator? (It is 258,741 by the way.) 

If you double that number you get 517,482. Do you notice anything similar about those two numbers? They have the same digits. And I have yet to find another number that, when doubled, gives you the exact same digits, just in a different order.

Play around with a calculator and see if you can find any other numbers like that. Or not.

Check this out:

333 x 444 = 147,852

333 x 777 = 258,741

Those two answers are the same number in reverse!

I do a lot of math in my head.