How many words can a pen with half refill write?

What begins with T, ends with T, and has T in it?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Can you write down eight eights so that they add up to one thousand?

Can you start the fire using two pieces of wood?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

What do you answer even though it never asks you questions?