The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a l

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter that is not “A”?

ALGEBRA has 7 letters
Of the 7 letters, we have 2 A's.
So we have 7 - 2 = 5 letters which are not A

P(Not A) = Letters not A / Total letters
P(Not A) = 5/7