Video Transcript
Is there a key to every door in the given figure?
First, let’s count the number of doors: one, two, three, four. And there are one, two, three keys. The first door has a key, the second door has a key, the third door has a key. But the fourth door does not have a key.
So the answer to the question, “Is there a key to every door in the given figure?” is no.
