Question

Add any three odd numbers from 1 to 15 so that the result is 30?

Answer 1

it is not possible to obtain even number by adding odd number
odd number between 1 to 15 are 1, 3, 5, 7, 9, 11, 13, 15
by fectorial method you can get the answer
3! + 11 + 13 = 30 
3! + 9 + 15 = 30
3! = 1*2*3 = 6

Answer 2

Only factorial methhod is possible. Factorial method is toget the sum of all the numbers till that number(3) example 4!
1+2+3+4 =10
same way
3!+13+11
(1+2+3)3! +13+11

Hope this was helpful !!! :)