Interrogative adjective modifies a noun or noun phrase in order to ask for information specifying something, or quantity.
ko
ko is used to ask for information specifying one or more people or things from a definite set; furthermore, it is equal to English determiners ‘what‘ and ‘which‘.
ko-soran ebaiver tugan;
‘Which skirt do they want to buy?‘
ketro
ketro is used to ask what number, amount, or price; furthermore, it is equal to English phrases ‘how many‘ and ‘how much‘.
ketro-ödeliän fádet;
‘How many books did you sell?‘
ketro-wiltan kädühder sőkellässä;
‘How much sugar does one need to make a cake?‘
Jembesa 