math trick

by deepanshu garg

think one number and that number only you that number of your friend and add it which answer you get you can plus on that 1000 and that answer will come you can divide with 2 and that you think your friend means that number you think that number you subtract answer is 500 you friend ask you how you do it?
that number I say to subtract you can half of this number is 500. you can say to add like 20000,10000,1000.100 etc

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