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#### Albert

##### Well-known member

- Jan 25, 2013

- 1,225

HI : good to see you everybody ,I am a new comer on this board

Being a math teacher ,I always trained my students with various difficult problems

from now on I am going to post a sequential challenging questions for people to share

most of them I know the answer and the solution of it , maybe your solution is quicker and smarter

please try it many thanks

here comes the problem :

Being a math teacher ,I always trained my students with various difficult problems

from now on I am going to post a sequential challenging questions for people to share

most of them I know the answer and the solution of it , maybe your solution is quicker and smarter

please try it many thanks

here comes the problem :

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