Il numero 91, novantuno in Italiano, in Inglese si dice ninety-one.
Il numero ordinale 91° in inglese si dice ninety-first.
82: eighty-two 83: eighty-three 84: eighty-four 85: eighty-five 86: eighty-six 87: eighty-seven 88: eighty-eight 89: eighty-nine 90: ninety 92: ninety-two 93: ninety-three 94: ninety-four 95: ninety-five 96: ninety-six 97: ninety-seven 98: ninety-eight 99: ninety-nine 100: one hundred