Question

If a letter is chosen at random from the English alphabets {a, b, …, z}, then the probability that the letter chosen precedes x

Options

• `12/13`

• `1/13`

• `23/26`

• `3/26`

Answer 1

`23/26`

Explanation;

Hint:

n(S) = 26

Let A denote the letter chosen precedes x

A = {a, b, c, d, …, x}

n(A) = 23

P(A) = `("n"("A"))/("n"("S")) = 23/26`