The 2nd will fill first as no connection with the third, also physics concept water seeks its own level..
Tank number 2 will fill first
Answer: Tank number 2 will fill first as the passage to 3 is closed so 2nd tank will fill first
Tank 3 will get filled first immediately followed by tank 4. Tank 2 and 1 will never get filled completely. The reason is that number 3 and 4 will keep overflowing not allowing any more water accumulating in 1 and 2.
Look at the below picture very carefully. If I will open a tap above tank A, Which tank is the first one to be filled completely?
If an infinite supply of water is supplied to tank A, Which tank will fill first?
