three letters from the word "planters" are chosen, find p(3 consonants)
The total ways we can choose any 3 letters out of 8 is given by C(8,3) = 56
But,we only want to choose 3 of the 6 cosonanats = C(6,3) = 20
So we have 20 / 56 = 5 / 14 = about a 35.7% chance of choosing a consonant..!!!
planters plntrs 6 consonants out of 8 letters
P that the first one is a consonant is 6/8
P that the second one is a consonant is 5/7
P that the 3rd one is a consonant is 4/6
p(all 3 are consonants) = 68×(57)×(46)=514=0.3571428571428571
Melody chose to answer this using a " fundamental counting principle" approach....I chose a "set counting" approach.......again....
"All roads lead to Rome.'
Melody Sorensen (ca. 2015)