Monday, 13 October 2014

T1B17

I don't know if I've posted this before, but I ran across it again today, so here:

Take 1000 and add 40 to it. Now add another 1000. Now add 30. Add another 1000. Now add 20. Now add another 1000. Now add 10. What is the total?

The most important thing is to NOT use a calculator, or paper or pencil. USE MENTAL MATH.
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