The numbers and symbols below are placed onto five vertical strips of paper:

           =   =   8   8   2
           +   -   2   6   1
           =   =   5   2   0
           +   +   9   1   9

Rotate and rearrange the strips so that four valid equations appear across the rows.

For example, if you had the 2×1 strips:

=  =  6  6  8
-  +  1  1  5

You could rearrange them as:

5  +  1  =  6
8  =  9  -  1

Note: Consider the numbers as they appear on a digital watch; 0, 1, 2, 5 and 8 are the same when rotated 180°, while 6 and 9 rotate to each other.

Posted by K Sengupta on 2024-03-08 08:54:07