Last Puzzles (Extremely Hard Civil Services Problem)

( ) + ( ) + ( ) + ( ) + ( ) = 30 This is what you have for equation. The following are the numbers that you can use to fill in the brackets: 1, 3, 5, 7, 9, 11, 13 and 15 You can repeat the numbers if required. The resulting sum should be 30. This question appeared in the UPSC final examination in December 2013. Out of all the people who appeared, only one guy was able to solve this namely Gaurav Agarwal. Can you solve it?

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