The table below shows the probability distribution of the number of credit cards people own. what is the probability (as a percentage) that a person will have at least three credit cards

28%

Step-by-step explanation:

From the table, the probability that the person will have

The sum of all probabilities must equal to 1, so

The probability that a person will have at most 3 credit cards is

and as a percentage 28%

it would be 6xy and -16xy.

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b