[Function]
1. You can confirm the outcome of the set operation problem of the4 sets A, B, C and D.
2. We put the frequently used expressions in the example button ofthe upper right corner.
[N.B.]
In accordance with the device, language and font you use, theletters on the button might go Cyrillic.
Install the full version after installing the FREE version first tomake sure there’s no problem.