Question 1025726
i believe your answer will be as follows.


assuming that the letter is in the first position, then the number of possibilities is:


26 * 10 * 9 * 8 * 7 * 6 * 5


if the letter can be in any position, then multiply that result by 7 because there are 7 positions that the letter can be in.


i get 3931200 assuming the letter has to be in the first position.


i get 7 * 3931200 = 27518400 assuming the letter can be in any position.


hopefully that agrees with what you should be getting.


if not, then let me know what you should be getting and i'll try to figure it out.