If a certain number with two digits is divided by the sum of the digits the quotient is 6 and the remainder is 5. The difference between the given number and the number formed by reversing the digits is 18. Find the given number

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.