They don't mean the same thing. ber means to ask someone to do something. frågar means to ask a question. I agree that frågar is a word that is probably more frequently used.
What about "Jag ber honom att tala långsamt"? According to the lesson notes, one doesn’t need to add “att” if an object is directly followed by a vern in infinitive form but would it be grammatically incorrect to add it?
It works perfectly fine with att in this case. It varies depending on the (first) verb, but with ber, either way is fine.
be om is like 'ask for' in English. You typically ask for nouns that you want to get: Jag ber om vatten 'I'm asking for water'. But when you ask someone to do something, it's just ber, without a preposition. If you add om here, you need to have a clause after it. Jag ber om att han ska prata långsamt 'I ask for him to speak slowly'.
The words provided in the dropdown do not include beg. The word ask is included in the drop down . i used the word ask and was deemed incorrect
That was probably because of something else. The recommended answer is I ask him to speak slowly. Unfortunately, the machine is really bad at giving helpful corrections, so it's hard to know for sure what it might not have liked in your answer.
Thanks Arnauti. I realised that I had used the word "asked" and it corrected this to "beg" however when I put in "ask" it accepted it. Its definitely a bit "clunky" Cheers Dave