Translation:How many centimeters are in a meter?
The "correct answers" are written in grammatically incorrect English. "How many centimeters does a/one meter have?" would be more appropriate.
Is it wrong if I ask in this way : " How many centimeters are THERE in a meter?
no, i once experimented with a lot of combinations, and Duolingo will accept a lot of combinations.
For better understanding, what would the sentence look like if the English were, "A meter has how many centimeters?"
Um metro tem quantos centímetros?
Quantos centímetros um metro tem?
Tem quantos centímetros um metro?