How is the moon similar to a dollar?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Who has married many women but was never married?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

What is black when you buy it, red when you use it, and gray when you throw it away?

In a fruit store, there was a unique weighing machine that was made to weigh only cherries and strawberries as they were priced the same.

Other fruits like watermelons or mango had different machines as they were expensive.

A man successfully buys watermelons at the price of cherries. How?

Can you count the number of quadrilaterals in the picture below?

Can you find a five letter word that is left with only two letters if one is removed?