Mathematics, 02.10.2019 12:00 bchagnard2122

The surname of 40 children in a class were arranged in alphabetical order, 16 of the surnames begin with o and 9 of the surnames begins with a. 14 letters of the alphabet do not appear as the first letter of a surname. what is the probability that the surname of a child picked at random from the class begins with either o and a?

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