Mark can remember only the first 4 digits of his friends 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 21 seconds to try each one, how long it take to try every possibility
+4
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Mark can remember only the first 4 digits of his friends phone number. He also knows that the number has 7 digits and that the last digit ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Home » Mathematics » Mark can remember only the first 4 digits of his friends phone number. He also knows that the number has 7 digits and that the last digit is not a 0.