I'm Dave.

In revenge for my calculator key-switching prank, Rybo has performed a similar prank on me!

My calculator has the usual number keys, and keys for the usual four arithmetic operations:

0123456789 ; +-x÷

All of the digits are where they should be, but two of the arithmetic-operation keys have been swapped. I don't know which two. Rybo says I'm only allowed to perform one operation - compute one sum using some of the ten digits and the four operation keys, as well as brackets () if necessary, any number of times - in such a way that the result of the calculation will tell me which two have been swapped.

Is this possible? If so, how can I do it?

_{Out-of-character disclaimer: I don't know the answer to this question.}

I'm Dave.

In revenge for my calculator key-switching prank, Rybo has performed a similar prank on me!

My calculator has the usual number keys, and keys for the usual four arithmetic operations:

0123456789 ; +-x÷

All of the digits are where they should be, but two of the arithmetic-operation keys have been swapped. I don't know which two. Rybo says I'm only allowed to perform one operation - compute one sum using some of the ten digits and the four operation keys, as well as brackets () if necessary, any number of times - in such a way that the result of the calculation will tell me which two have been swapped.

Is this possible? If so, how can I do it?

_{Out-of-character disclaimer: I don't know the answer to this question.}

I'm Dave.

In revenge for my calculator key-switching prank, Rybo has performed a similar prank on me!

My calculator has the usual number keys, and keys for the usual four arithmetic operations:

0123456789 ; +-x÷

All of the digits are where they should be, but two of the arithmetic-operation keys have been swapped. I don't know which two. Rybo says I'm only allowed to perform one operation - compute one sum using some of the ten digits and the four operation keys any number of times - in such a way that the result of the calculation will tell me which two have been swapped.

Is this possible? If so, how can I do it?

_{Out-of-character disclaimer: I don't know the answer to this question.}

I'm Dave.

In revenge for my calculator key-switching prank, Rybo has performed a similar prank on me!

My calculator has the usual number keys, and keys for the usual four arithmetic operations:

0123456789 ; +-x÷

All of the digits are where they should be, but two of the arithmetic-operation keys have been swapped. I don't know which two. Rybo says I'm only allowed to perform one operation - compute one sum using some of the ten digits and the four operation keys, as well as brackets () if necessary, any number of times - in such a way that the result of the calculation will tell me which two have been swapped.

Is this possible? If so, how can I do it?

_{Out-of-character disclaimer: I don't know the answer to this question.}