Question

can you solve this
-+-+-=30
fill the boxes using
(1,3,5,7,9,11,13,15)

Answer 1

When adding odd numbers we do not get a result of even number. - so this is possible with only Factorial method. So the ans :- 3 !+15+9=30....!

Answer 2

i)   3!+1+3+13+7=30              [ If we solve by factorial method]ii)   3!+3!+3!+3!+3!=30     [3!=3×2×1=6]
[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.