# --+--+--+--+-- =30.Solve the puzzle with the numbers(1,3,5,7,9,11,13,15).Numbers can be repeated.Only addition operation allowed.

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by DhruvBose29

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by DhruvBose29

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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.

3! + 3! + 3! + 3! + 3! = 30

You can answer this question in many ways using the factorial function. The following are my answers, taking the tip from his answer.

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

If one can use /, * , exponent and other operators, then you can get more answers too. Question does not say anything about the operators.

5 * 3 + 13 + 1 + 1 = 30

13 + 15 + 3! - 3 - 1 = 30

15! / 13! / 7 + 1 - 1 = 30

5! / 3! + 1 * 3 + 7 = 30

7 * 5 - 3 - 1 - 1 = 30

9 * 7 / 3 + 9 * 1 = 30

3³ + 1 + 11 - 13 * 1 = 30

5³ / 15 * 3 + 5 * 1 = 30

3 * 15 - 11 - 3 - 1 = 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.

3! + 3! + 3! + 3! + 3! = 30

You can answer this question in many ways using the factorial function. The following are my answers, taking the tip from his answer.

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

If one can use /, * , exponent and other operators, then you can get more answers too. Question does not say anything about the operators.

5 * 3 + 13 + 1 + 1 = 30

13 + 15 + 3! - 3 - 1 = 30

15! / 13! / 7 + 1 - 1 = 30

5! / 3! + 1 * 3 + 7 = 30

7 * 5 - 3 - 1 - 1 = 30

9 * 7 / 3 + 9 * 1 = 30

3³ + 1 + 11 - 13 * 1 = 30

5³ / 15 * 3 + 5 * 1 = 30

3 * 15 - 11 - 3 - 1 = 30

======================================================

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.