Answers

2015-05-19T16:22:25+05:30
It cannot be as sum of 2 odd numbers is even number and sum of even and odd is odd but in question they asked  Three odd numbers whose sum is 30
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2015-05-19T18:05:04+05:30
The sum of three odd numbers gives an odd number
So, the sum of 3 given odd numbers doesn’t results 30
So, it is an impossible factor
here we can't use 3! too
because 3! [3×2×1] results a even number 6
so we can’t use it.
If there will be an allowance of factorials, then the answers will be
3! + 15 + 9 =30

3! + 11 + 13 = 30
1 5 1
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!=1*2*3*.......................
its a mistake
you did wrong
correct it