How many different four-letter secret codes can be formed if the first letter must be an S or a T?
A) 35,152
B) 456,976
C) 72
D) 421,824

Name: How many different four-letter secret codes can be formed if the first letter must be an S or a T? A) 35,152 B) 456,976 C) 72 D) 421,824
Brand: Quizplus
Rating: 4.9 (29 reviews)

Question

Quizplus · Accepted Answer

For the first letter, there are 2 choices (S or T). For each of the remaining three positions, there are 26 choices (any letter of the alphabet). Thus, the total number of codes is 2 * 26 * 26 * 26 = 35,152.

How Many Different Four-Letter Secret Codes Can Be Formed If