I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Where do you go to learn how to make ice cream?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

What goes up but never comes down?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Can you count the number of squares in the figure below?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?