Given that each three-letter three-digit arrangement is equally likely, the probability that such a license plate will contain at least one palindrome (a three-letter arrangement or a three-digit arrangement that reads the same left-to-right as it does right-to-left) is, where and are relatively prime positive integers.
Given na ang bawat tatlong-titik na tatlong-digit na kaayusan ay pare-pareho malamang, ang probabilidad na tulad ng isang plaka ng sasakyan ay naglalaman ng hindi bababa sa isang palindromya (isang tatlong-sulat-aayos o ng isang tatlong-digit na-aayos na nagbabasa ng parehong kaliwa-papuntang-kanan na ito ay kanan-papuntang-kaliwa) ay, Kung saan at ay relatibong kalakasan positive integers.