Answers

2015-04-07T06:16:46+05:30
Using factorial method, we can solve this sum......because when we add even numbers we do not get an odd number..........3!+15+9=30
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2015-04-07T06:29:05+05:30
1+2+3+....................+n!=n!
so itsĀ ...3!+15+9=30
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