Mathematical Puzzles : What is -LRB- -RRB- + -LRB- -RRB- + -LRB- -RRB- = 30 using 1,3,5,7,9,11,13,15 ?
Is it possible to make 10000 out of the digits 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , and 9 using only the sum operator and using all the digits exactly once ?