Fill the boxes using (1, 3, 5, 7, 9, 11, 13, 15)

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......
You will be glad to note that only Gaurav Agarwal could solve it.
Possible Solutions to Fill the boxes Puzzle :
Solution 1 :
(15-9)+(13-7)+(7-1)+(9-1)+(13-9)=30
so from the solution we can get
6+6+6+8+4 = 30
Solution 2 :
3weeks+7days+11hrs+13hrs+1days = 30day
Solution 3 :
3!+3!+3!+3!+3!=30

Dimag hai to answer do!

Dimag hai to
answer do!
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jo saal me 1 bar,
mahine me 2 bar,
hafte me 4 bar,
aur din me 6 bar
aati hai..?
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Click here for Answer

The answer is odd numbers
year = 12 the '1' is odd (that's 1)
month = 4 weeks, so there's 2 odd weeks '1' and '3' (that's 2)
Week = 7 days 1,3,5 and 7 are odd (that's 4)
day =12 hours 1,3,5,7,9,11 are odd (that's 6)