# ()+()+()+()+()=30 Solve this 30 fill the boxes using 1 3 5 7 9 11 13 15 u can also repeat the numbers this question came in upsc final exams held in dec 13 solve

2
by kavyaSen938

2014-11-28T21:29:05+05:30
3!+3!+3!+3!+3!=30

Note that 3*2*1=6
3! +3!
3!
Comment has been deleted
2014-11-28T23:47:07+05:30

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Gaurav Agrawal answered very intelligently and using his imagination.         -- really for this question is asked so many times.. all credit goes to him.  I believe his answer was:
3! + 3! + 3! + 3! + 3!      = 30

you can answer this question in many ways using the factorial function.

3! + 1 + 3 + 9 + 11          = 30
1 + 5 + 7 + 3! + 11               = 30
3! + 3! + 3! + 11 + 1             = 30
3! + 3! + 11 + 5 + 1               = 30
11+ 1 + 1 + 3! + 11              = 30
15 + 3 + 3 + 3 + 3!              = 30
13 + 1 + 1 + 9 + 3!            = 30
13 + 1 + 3 + 7 + 3!            = 30
13 + 5 + 3 + 3 + 3!            = 30

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You need one operator for which the result is an even number with an input being an odd number.  Factorial is one.  Probably there are other operators too.

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