actually its 8th, perhaps its Portuguese which surpassed Bengali, i never saw it in top 7 until recently.

কততম means at what rank/position. it asks the rank of Bengali among other languages in terms of total number of speakers.

Around 6 and 7. প্রায় ৬-৭ এর মধ্যে । (To the other commenters for this question, the question in English is: "Currently what is the place of the Bengali language in the world?") Hope it helps ^_^

please type in English....I mean in Roman alphabets.

কততম　মানে　কী？