There are 11 letters in mathematics and 2 M. So probability is 2/11.
This word contains 11 letters, 2 of them being "M". Probabilty of taking "M" is 2/11
There are 11 letters and 1 M and 1 m I guess the probability of being M would be 1 / 11
If two letters are randomly taken one after the other from the word AUGUST, what is the probability that none of the letters would be vowels?