It is number 5, sir
Water starts from the tap and flows into Container 1.
From Container 1, it moves into Container 2.
Container 2 has an opening leading to Container 3, but Container 3's exit pipe is blocked, meaning water cannot flow out of it. So, water won't reach Container 3.
Instead, water will flow downward from Container 2 into Container 5.
And although the water can flow too into number 4, it has a hole which means it can't be filled
Therefore
The correct answer is Container 5, as it is the first to fill up completely.
