Brianna F.

asked • 04/12/20

how many 7 digit telephone numbers can be formed if the first digit cannot be 0 or 1?

1 Expert Answer


Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.


Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.