how to calculate _+_+_=30,What is the answer of _ _ _ 30? And the condition for the above math problem is .... How do I calculate () + () + () = 30 using 1,3,5,7,9,11,13,15? We should use odd numbers only. I.e above shown numbers using 1,3,5,7,9,11,13,15? What would be the numbers in the blanks...