At the 6th grade school dance, there are 132 boys, 89 girls and 14 adults.
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Answer:
The chance that both are statistics books is
Step-by-step explanation:
Probability is the greater or lesser possibility of a certain event occurring. In other words, probability establishes a relationship between the number of favorable events and the total number of possible events. Then, the probability of any event A is defined as the quotient between the number of favorable cases (number of cases in which event A may or may not occur) and the total number of possible cases. This is called Laplace's Law.
Combination of n elements taken from k to k is called each of the ways of choosing k different elements from the n of the original set. That is, it is called combinations of m elements taken from k to k to all the possible groupings that can be made with the m elements. It is expressed as:
Remember that the factorial of a positive integer n is defined as the product of all the natural numbers before or equal to it.
A bookcase contains 2 statistics books and 5 biology books. The total number of book is 7.
2 books are chosen at random. The total outcomes can be obtained by selection of two books from seven books which is represented as follows:
The selection of two statistics book from two statistics book is represented as follows:
Then, the probability is:
<u><em>The chance that both are statistics books is </em></u><u><em></em></u>