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Using these numbers 1,3,5,7,9,11,13,15, solve this = 30 days. You can repeat these numbers.

You need to fill the numbers in 5 spaces given below.

------ + ------ + ------- + --------- + -------- = 30 days


it is not possible because adding odd digits any odd number of times will never result in an even number.
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i)   3!+1+3+13+7=30              [ If we solve by factorial method]
ii)   3!+3!+3!+3!+3!=30

[without factorial method]
Odd nos added for odd nos. of time will always give an ODD NUMBER.
Odd nos added for even no of time will give an EVEN NUMBER.
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