A shoe store sells sneakers, loafers, and boots in narrow, medium, and wide widths. They are available in sides 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, and 10.5. Find the number of pairs of shoes available. Then find the probability of selecting a size 8 in medium width sneakers. Is it likely or unlikely that the size would be chosen?