Rebecca remembered the first six digits of a friend's 7-digit phone number. If she randomly selects a digit to replace the last digit she can't remember, what is the probability she will dial the correct number? Express your answer as a common fraction.
+36916 She has 10 choices 0 - 9 a 1/10 chnace of getting it correct on the first try... 1/10 or 10%
