Question

what will be the probability of B in PROBABILITY​................maths

Answer 1

Answer:

Independent Events

Events can be "Independent", meaning each event is not affected by any other events.

head tails coin

Example: Tossing a coin.

Each toss of a coin is a perfect isolated thing.

What it did in the past will not affect the current toss.

The chance is simply 1-in-2, or 50%, just like ANY toss of the coin.

So each toss is an Independent Event.

Dependent Events

But events can also be "dependent" ... which means they can be affected by previous events ...

probability marbles

Example: Marbles in a Bag

2 blue and 3 red marbles are in a bag.

What are the chances of getting a blue marble?

The chance is 2 in 5

But after taking one out the chances change!

So the next time:

probability marbles

if we got a red marble before, then the chance of a blue marble next is 2 in 4

probability marbles

if we got a blue marble before, then the chance of a blue marble next is 1 in 4

This is because we are removing marbles from the bag.

So the next event depends on what happened in the previous event, and is called dependent.

Answer 2

Answer: A study of probability helps us figure out the likelihood of something happening.

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