Solve this using only your mind, without a calculator or paper. (Page 2 ) | April 26, 2025
Annonce:
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THE REPLY
Add 40 first, then 1000, then 30 next, then 1000, then 20 next, then 1000, and lastly, 10.
The sum is:
4090 is the sum of 1000 + 40 + 1000 + 30 + 1000 + 20 + 1000 + 10.
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