Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

What is next number in the pattern below:

131 517 192 123 ?

If you say my name, I will no longer exist. What am I?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Why is the Hole below a Lock?

How far can you walk into the woods?