Select the correct answer.

A letter is selected at random from the English alphabet. What is the probability that the letter comes after D in the alphabet?

A. [tex]\frac{1}{2}[/tex]
B. [tex]\frac{11}{13}[/tex]
C. [tex]\frac{21}{26}[/tex]
D. [tex]\frac{5}{20}[/tex]



Answer :

To determine the probability that a letter selected at random from the English alphabet comes after D, we need to follow these steps:

1. Identify the total number of letters in the English alphabet:
There are 26 letters in the English alphabet.

2. Identify the letters that come after D:
The letter D is the 4th letter in the alphabet. The remaining letters after D start from the letter E up to the letter Z.
- These letters are: E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z.

3. Count the number of letters that come after D:
- There are 22 letters after D.

4. Calculate the probability:
- The probability [tex]\(P\)[/tex] of selecting a letter that comes after D from the alphabet is the ratio of the number of favorable outcomes to the total number of outcomes.
- The count of letters after D is 22, and the total count of letters in the alphabet is 26.

[tex]\[ P(\text{letter comes after D}) = \frac{\text{Number of letters after D}}{\text{Total number of letters}} = \frac{22}{26} \][/tex]

5. Simplify the fraction:
[tex]\[ \frac{22}{26} = \frac{11}{13} \][/tex]

Hence, the correct answer is:

[tex]\[ B. \frac{11}{13} \][/tex]