How can you make the number 15 using four 9's?
Like (9+9)/(9+9)=1
You need to use exactly four 9's
You can use the operators +, -, x, /, and nth roots
I've already made 1-14, but I'm really struggling with this one.
Help? :s
Edit: Thank you so much, guys!
February 7, 2011
3 Comments • Newest first
Eat a tomato.
(Square root 9 x Square root 9) + (Square root 9 + Square root 9) = 15
[quote=Bystander]Can you do 9+sqroot9+sqroot9+sqroot9?[/quote]
That's 18
...Unless I'm wrong..