Video: Comparing Numbers by Counting

Is there a key to every door in the given figure?

00:51

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.

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