Question

Find the probability of choosing a letter other than the letter O from a bag that contains the eighteen letters of the Italian city CASALNUOVO DI NAPOLI. Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

Answer 1

In this problem

we have

total letters=18

total letters that do not include the letter O=15

therefore

the probability is

P=15/18

simplify

P=5/6