Simple Magic...

Its very simple but interesting...

I think most of them know this trick, if not learn and impress ur friends..

everyone have monthly calenders consider this as one

1 2 3 4 5 6 7

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31...

here tell the person to consider four numbers in there mind they should be linked in a square manner.

I Have selected some numbers for example in the above..

tell them to say the total of the four numbers only the total

now when u get the total value 

just divide it by 4 and get a value keep it as X..

when u reduce 4 and add 4 to X u will get first and fourth number that they thought in mind

finding other too is easy for u now

eg: 2 3 

9 10

I hope u all can understand what i am saying its very simple ...