probability symbols

Probability notation is a way of expressing the likelihood of an event happening using mathematical symbols:

This also comes under:

Probability notation 
or probability and unions
and probability and U's

How do we read these symbols?

How to remember what the probability symbols mean use the following mnemonics:

Remember probability symbol A’

Think of a hand pointing down from the sky and someone saying NOT him.

Remember probability symbol ∪

Think of U as a cup or spade that digs gold ore (OR) out of the ground.

Remember probability symbol ∩

The word AND nearly has a ∩ in it:

Probability symbols in use

In dice, P (6) would mean - in rolling a dice, what's the probability of rolling a 6.

Flipping a coin, (PH) would mean - in flipping a coin what's the probability of flipping a heads.

In dice, P (6’) would mean - in rolling a dice, what's the probability of not rolling a 6.