can you find out which glass gets full first?

Let's trace the paths to see which glass actually fills up first, keeping a close eye on the blocked pipes!

• Glass 1: The liquid pours into Glass 1. The pipe leading to Glass 2 is completely open, but look closely at the pipe leading to Glass 3—it is blocked right at the entrance of Glass 1. So, liquid can only flow toward Glass 2.

• Glass 2: Liquid enters Glass 2. The pipe leading to Glass 4 is open. However, look at the pipe leading to Glass 5—it is blocked at the exit of Glass 2. So, liquid flows toward Glass 4.

• Glass 4: The pipe from Glass 2 flows straight down into Glass 4 without any blockages. Since it has no exit pipes draining it out, Glass 4 will fill up completely.

Therefore, Glass 4 gets full first!