If a card was randomly drawn from 8 cards numbered as follows: 56, 83, 39, 22, 29, 68, 14, and 53, find the probability of having a card carrying a number whose tens digit is even.
To find the probability that a randomly drawn card has a number
whose tens digit is even, divide the number of cards that have a
number whose tens digit is even by the total number of cards.
Note that the numbers whose tens digit is even are 83, 22, 29,