Question

( )+( )+( )+( )+( )=30. Put the brackets with these number. 1,3,5,7,9,11. the number can be reapeted again solve this guys

Answer 1

such questions are to answer as per your imagination goes.  There is one restriction that only + is used. Another is only those digits are to be used. 

The problem can be solved if all 5 numbers in ( ) are even, or 3 of them are even or just one of them is even. One of the operators which converts an odd numbers to even is the factorial.

(1! )+ (3!) + (1!) +( 11) + (11)
(3!) + (3! )+(3!) +( 9) + (3)
(3!) + (3! )+(3!) +( 7) + (5)
(5) + (1 )+(3!) +( 9) + (9)
(5) + (1 )+(3!) +( 7) + (11)