If a card is randomly drawn from some identical cards carrying the numbers 2,
5, 7, 4, and 17,
determine the probability that the selected card has an even number.
To find the probability of randomly drawing a card carrying an even number on it, divide the number of cards carrying an even number by the total number of cards.
Even numbers have a units digit of 0, 2, 4, 6, or 8, so the even numbers on the cards are 2 and 4.