Probablity

Probability of landing on a purple number on this spinner

Probability of landing on an odd number on this spinner.

What is the probability of landing on a number on this spinner

What is the probability of rolling a 3 or a 2 on a six-sided die

The probability of Sarah being chosen as a school prefect is 

The probability that a student is a librarian is 0.2. Three students are chosen random. Find the probability that all three are librarians.

A sample space of an experiment is given by S = {1, 2, 3, …, 20}. Event M and N are defined as follows:

M = {3, 6, 9, 12, 15, 18}

N = {1, 3, 5, 15}

Find P(M and N).

A box contains 20 chocolates. 5 of the chocolates are black chocolates flavour and the other 15 are white chocolates flavour. Two chocolates are taken at random from the box.

Find the probability that both chocolates are black chocolates.