What four weights can be used to balance from 1 to 30 pounds?

When does a USA Potato change its nationality?

What does below rebus means ?

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

Before Mount Everest was discovered, what was the highest mountain in the world?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).