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I have been asked if it's possible to only show the incorrectly answered questions when repeating a completed H5P activity.

Let me give an example, with a quiz set with 10 questions:

1. User completes the exercise. Three questions are answered incorrectly.
2. in the summary screen, the user clicks the retry button or a 'new round' button.
3. only the three incorrect answers are offered to the user.

The dialog card activity offers something that looks like this function, based on the Leitner system.

Can you add math functions such as exponents and square roots, etc...?

Can you add math functions such as exponents, square roots ect to the text options?