Knowledge You Can Build On — Est. 1998
Friday Puzzler -- 1158
Alex Y
This is just like the 3388 puzzle, which should make it easier (in theory, although I didn't think so).
Using just the four basic arithmetic operations and parentheses, form an expression using all four of the numbers 1,1,5, and 8 that calculates to 10.
Hint
Alex Y
Exactly one set of parentheses is required to force the calculation order.
Sounds familiar? ;-)
Re: Hint
Larry Barrett
It does sound familiar.
How about 8/(1-1/5)?
Correct!
Alex Y
Amazingly, all three of the hints for 3388 work here.
