Answers

2015-04-20T10:34:55+05:30
Its only possible if u take factorial of the numbers and try 
only odd numbers wont give  an even sum
LIKE 3!+15+9
0
(11-5)+11+13=30
doesnt add up to 30 check again
2015-04-20T10:40:06+05:30
it is it is impossible to get answer in even number by adding  odd number. But it can do by factorial method.
3! + 15 + 9 =30
3! + 11 + 13 = 30
3! = 1*2*3 = 6
0
3! + 15 + 9 =30
3! + 11 + 13 = 30
3! = 1*2*3 = 6
15+13-11+9+7-5+3-1
15+13-11+9+7-3
15+13-9+7+3+1
15+13-9+7+5-1
15+13-7+5+3+1
15+13+3-1
15+13+5-3