4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

Decode below rebus
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Why Wine Glass Stem is so long?

What happened when the wheel was invented?

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

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

How many times can you subtract the number two from the number fifty?

I add 5 to 9 and get 2. The answer is correct, so what am I?

What number comes next in this sequence:
7 8 5 5 3 4 4 _