if you choose a letter at random from the word PROBABILITY ,what is the probability of choosing a B or an I?

HELP ME GUYS

Respuesta :

so prpbility is (desired outcomes)/(total possible outcomes)

there are 11 letter so 11 total outcomes
so chosing a B or an I so find how many total
2 B nd 2 I's
2+2=4
so 4/11 is the probablity