Question

1 3 5 7 9 11 13 15 if fill the three boxs any three number adding equal to 30

Answer 1

that is not going to sum of three numbers = 30  from ( 1 , 3, 5,7,9,11 , 13 ,15 all are odd numbers ) while  30 is and even and to chose three numbers only . so, it is not possible . 
   if we take  15 + 13 + 1 = 29 
                   15 + 11 + 5 = 31 
                    5 + 7 +15 = 27 
 hence  , it is not possible ..