A telephone number consists of a sequence of seven digits not starting with a 0 or a 1. How many phone numbers begin with either 7,342, 7,423, or 7,224 ?
A)2,187 numbers
B) 27,000 numbers
C) 1,000 numbers
D) 3,000 numbers
E) 90 numbers

Question

A telephone number consists of a sequence of seven digits not starting with a 0 or a 1. How many phone numbers begin with either 7,342, 7,423, or 7,224  ?
A)2,187 numbers
B) 27,000 numbers
C) 1,000 numbers
D) 3,000 numbers
E) 90 numbers

Quizplus · Accepted Answer

The Answer of A telephone number consists of a sequence of seven digits not starting with a 0 or a 1. How many phone numbers begin with either 7,342, 7,423, or 7,224  ?
A)2,187 numbers
B) 27,000 numbers
C) 1,000 numbers
D) 3,000 numbers
E) 90 numbers

A Telephone Number Consists of a Sequence of Seven Digits