Question

By using the numbers 1,3,5,9,11,13,15
___+___+____=30
You can use only the numbers above

Answer 1

1,3,5,7,9,11,13, and 15

()+()+()=30

If you can only use three of the numbers this is impossible.

They are all odd numbers.

odd+odd+odd=odd, not even and 30 is even

odd+odd=even and even+odd=odd

However,....

If you use some tricks like the following you can do this...

(15)+(5)+(11-1)=30

Or

(3+7)+(9+1)+(15-5)=30

Answer 2

Hey mate!!!!

Here some of us will think that 3 odd number can't sum up to an even number

But in this case

We have to use a little brain

11 + 13 + _ = 30

Now 9 when inverted can be written as 6 so

11 + 13 + 6 = 30