The probability that a student has a visa card (event v) is .73. the probability that a student has a mastercard (event m) is .14. the probability that a student has both cards is .03. (a) find the probability that a student has either a visa card or a mastercard. (round your answer to 2 decimal places.)

The probability that a student has either a Visa card or a MasterCard is 0.84.        

Step-by-step explanation:

Given : The probability that a student has a Visa card (event V) is 0.73. The probability that a student has a MasterCard (event M) is 0.14. The probability that a student has both cards is 0.03.

To find : The probability that a student has either a Visa card or a MasterCard ?

Solution :

The probability that a student has a visa card(event V) is P(V)= 0.73

The probability that a student has a MasterCard (event M) is P(M)= 0.14

The probability that a student has both cards is

Probability that a student has either a Visa card or a Master Card is given by,

Therefore, the probability that a student has either a Visa card or a MasterCard is 0.84.

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.