Two unique letters are chosen at random from the alphabet.

what is the approximate probability that the first letter chosen is a?

a. 0.0385
b. 0.0400
c. 0.0769
d. 0.0800

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?