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Solve the problem by the Fundamental Counting Principle. How many differentfour-letter secret codes can be formed if the first letter must be an S or
Solve the problem by the Fundamental Counting Principle.
How many differentfour-letter secret codes can be formed if the first letter must be an S or aT? Repetition isallowed.)
A. 421824
B.
456,976
C.
35,152
D.
72
WHICH ONE THE ANSWER?
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