Use the basic counting rule to solve the problem.
-Mark can remember only the first 3 digits of his friend's phone number. He also knows that the number has 7 digits and that the last digit is not a 0. If Mark were to dial all of the possible numbers And if it takes him 24 seconds to try each one, how long would it take to try every possibility?
A)400.1 minutes
B)3600 minutes
C)16 minutes
D)4000.8 minutes

Question

Use the basic counting rule to solve the problem.
-Mark can remember only the first 3 digits of his friend's phone number. He also knows that the number has 7 digits and that the last digit is not a 0. If Mark were to dial all of the possible numbers And if it takes him 24 seconds to try each one, how long would it take to try every possibility? 
A)400.1 minutes
B)3600 minutes
C)16 minutes
D)4000.8 minutes

Quizplus · Accepted Answer

The Answer of Use the basic counting rule to solve the problem.
-Mark can remember only the first 3 digits of his friend's phone number. He also knows that the number has 7 digits and that the last digit is not a 0. If Mark were to dial all of the possible numbers And if it takes him 24 seconds to try each one, how long would it take to try every possibility? 
A)400.1 minutes
B)3600 minutes
C)16 minutes
D)4000.8 minutes

Use the Basic Counting Rule to Solve the Problem