The local seven-digit telephone numbers in city A have 265 as the first three digits. How many different telephone numbers are possible in city A?
Added by Stephanie M.
Close
Step 1
Step 1: Since the first three digits are fixed as 265, we only need to consider the last four digits of the telephone number. Show more…
Show all steps
Your feedback will help us improve your experience
Shyam P and 86 other Algebra educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
1.) The local seven-digit telephone numbers in city A have 419 as the first three digits. How many different telephone numbers are possible in city A? Please explain? The answer should be 10,000? How?
Shyam P.
HOW MANY 7 DIGIT TELEPHONE NUMBERS ARE POSSIBLE IF THE FIRST DIGIT CANNOT BE ZERO AND: A) THE TELEPHONE NUMBER MUST BE A MULTIPLE OF 100? B) ONLY ODD DIGITS CAN BE USED? C) THE FIRST 3 DIGITS ARE 277?
Narayan H.
A telephone number has seven digits, no number starts with $0 .$ In a city, how many different telephone numbers be formed using the digits 0 to $6 ?$ (each digit can occur only once) (1) $6 !$ (2) $6.6 !$ (3) $7 !$ (4) $2 \cdot 7 !$
Recommended Textbooks
Elementary and Intermediate Algebra
Algebra and Trigonometry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD