Probability tells how likely of an event will happen or how likely a statement is true.
Suppose there are two events, A and B are independent to each other, the Probability will be calculated as: P(A and B) = P(A)P(B)
If the two events are dependent to each other, there are two cases as shown below:
Mutually Exclusive: P(A or B) =P(A)+ P(B)
Not Mutually Exclusive: P(A or B) = P(A) +P(B) - P(A and B)
The video below teaches students to use the tree diagram in solving the probability question besides categorizing the tree diagram for 1st time, 2nd time and the situation of "without replacement"
To enhance students understanding, the video below uses one of the famous type of probability question in Add Maths using tree diagram to solve.
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