Out-to-Lunch
Thinks s/he gets paid by the post
(2+i)*(2-i) ?
Here, of course, i=sqrt(-1)
Here, of course, i=sqrt(-1)
* two, and only two, 2s, and
Spoiler (scroll down for answer)
(2^2) + (2/2) = 5
(2+i)*(2-i) ?
Here, of course, i=sqrt(-1)
Isn't adding another number/variable/constant a violation?
Yeah, I concede that i could be considered a number, violating the premise. But, I thought of that solution, so I figgered I would throw it out there anyway!
I wondered philosophically about what constitutes an "operation" vs. a "number." For example, I was thinking about ln(), which seems clearly to be an operation, but for its inverse, exp(), you could squawk about its using a number, 2.182818...
here is the one answer, and they said there are more possible...
The square root of point 2 to the power of minus 2.
sqrt ( (.2)^(-2) )
.2^(-2) is the same as 1/0.04, i.e. 25
[Point 2 is usually written as 0.2, but .2 is also correct.]
Very clever!
For someone, I'm not that smart Lunch ;-)
here is the one answer, and they said there are more possible...
The square root of point 2 to the power of minus 2.
sqrt ( (.2)^(-2) )
.2^(-2) is the same as 1/0.04, i.e. 25
[Point 2 is usually written as 0.2, but .2 is also correct.]
I thought the answer had to equal “exactly 5”. How does 25 satisfy that?