Very tricky arithmetic! Note: This must be done in your head only .
Do NOT use paper and pencil or a calculator. Try it.

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?

Scroll down for answer…..

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Did you get 5000?

The correct answer is actually 4100.

If you don’t believe it, check it with a calculator!