A letter is chosen at random from the word mathematics. what is the probability of choosing either a T or an M? A) 4/11 B) 3/11 C) 1/11 D) 2/11
P( t or m) = P(t) + P(m) - P(t and m)
2/11 + 2/11 - 0/11 =
4/11 = "A"
+196 
